Please enter a valid full or partial manufacturer part number with a minimum of 3 letters or numbers

    LM555CN Search Results

    LM555CN Result Highlights (1)

    Part ECAD Model Manufacturer Description Download Buy
    LM555CN/NOPB Texas Instruments Highly Stable 555 Timer 8-PDIP 0 to 70 Visit Texas Instruments Buy
    SF Impression Pixel

    LM555CN Price and Stock

    Texas Instruments LM555CN-NOPB

    IC OSC SINGLE TIMER 100KHZ 8-DIP
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey LM555CN-NOPB Tube 5,464 1
    • 1 $1.15
    • 10 $0.833
    • 100 $1.15
    • 1000 $0.57721
    • 10000 $0.54207
    		Buy Now

    onsemi LM555CN

    IC OSC SINGLE TIMER 8-DIP
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey LM555CN Tube
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    		Buy Now
    Newark LM555CN Bulk 3,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.193
    		Buy Now

    Texas Instruments LM555CN

    IC OSC SINGLE TIMER 100KHZ 8-DIP
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey LM555CN Tube 680
    • 1 -
    • 10 -
    • 100 -
    • 1000 $0.57388
    • 10000 $0.57388
    		Buy Now

    Texas Instruments LM555CN/NOPB

    Timers & Support Products TIMER
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    Mouser Electronics LM555CN/NOPB 13,706
    • 1 $1.15
    • 10 $0.72
    • 100 $0.72
    • 1000 $0.577
    • 10000 $0.555
    		Buy Now
    Verical LM555CN/NOPB 780 12
    • 1 -
    • 10 -
    • 100 $0.69
    • 1000 $0.5673
    • 10000 $0.5167
    		Buy Now
    Arrow Electronics LM555CN/NOPB 780 6 Weeks 1
    • 1 $1.061
    • 10 $0.69
    • 100 $0.69
    • 1000 $0.5673
    • 10000 $0.5167
    		Buy Now
    LM555CN/NOPB 640 6 Weeks 40
    • 1 -
    • 10 -
    • 100 $0.69
    • 1000 $0.5673
    • 10000 $0.5167
    		Buy Now
    Newark LM555CN/NOPB Bulk 579 1
    • 1 $1.65
    • 10 $1.52
    • 100 $1.52
    • 1000 $1.25
    • 10000 $1.15
    		Buy Now
    Bristol Electronics LM555CN/NOPB 20 3
    • 1 -
    • 10 $1.6875
    • 100 $1.0969
    • 1000 $1.0969
    • 10000 $1.0969
    		Buy Now
    Quest Components LM555CN/NOPB 16
    • 1 $2.25
    • 10 $1.8
    • 100 $1.125
    • 1000 $1.125
    • 10000 $1.125
    		Buy Now
    TME LM555CN/NOPB 545 1
    • 1 $1.21
    • 10 $1.15
    • 100 $0.96
    • 1000 $0.67
    • 10000 $0.67
    		Buy Now
    New Advantage Corporation LM555CN/NOPB 515 1
    • 1 -
    • 10 -
    • 100 -
    • 1000 $1.28
    • 10000 $1.28
    		Buy Now
    Win Source Electronics LM555CN/NOPB 5,560
    • 1 -
    • 10 -
    • 100 $1.345
    • 1000 $1.093
    • 10000 $1.093
    		Buy Now

    National Semiconductor Corporation LM555CN

    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    Bristol Electronics LM555CN 366
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    		Get Quote
    LM555CN 366
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    		Get Quote
    LM555CN 39
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    		Get Quote
    LM555CN 12
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    		Get Quote
    LM555CN 7
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    		Get Quote
    Quest Components LM555CN 70
    • 1 $1.95
    • 10 $1.95
    • 100 $0.975
    • 1000 $0.975
    • 10000 $0.975
    		Buy Now
    LM555CN 32
    • 1 $1.95
    • 10 $1.56
    • 100 $1.17
    • 1000 $1.17
    • 10000 $1.17
    		Buy Now
    LM555CN 18
    • 1 $2.5
    • 10 $2
    • 100 $1.5
    • 1000 $1.5
    • 10000 $1.5
    		Buy Now
    LM555CN 8
    • 1 $12.967
    • 10 $11.5262
    • 100 $11.5262
    • 1000 $11.5262
    • 10000 $11.5262
    		Buy Now
    LM555CN 1
    • 1 $0.7
    • 10 $0.7
    • 100 $0.7
    • 1000 $0.7
    • 10000 $0.7
    		Buy Now
    ComSIT USA LM555CN 248
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    		Get Quote
    Chip 1 Exchange LM555CN 80
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    		Get Quote
    Find more LM555CN price and stock on Findchips.com

    LM555CN Datasheets (17)

    Part ECAD Model Manufacturer Description Curated Datasheet Type PDF
    LM555CN Fairchild Semiconductor Clock/Timing - Programmable Timers and Oscillators, Integrated Circuits (ICs), IC OSC SINGLE TIMER 8-DIP Original PDF
    LM555CN Fairchild Semiconductor Single Timer Original PDF
    LM555CN Intersil Timers for Timing Delays and Oscillator Applications in Commercial, Industrial and Military Equipment Original PDF
    LM555CN National Semiconductor Timer Original PDF
    LM555CN National Semiconductor Timer Original PDF
    LM555CN New Japan Radio Cross Reference Guide Original PDF
    LM555CN Texas Instruments LM555 - Highly stable 555 timer for generating accurate time delays and oscillation 8-PDIP 0 to 70 Original PDF
    LM555CN Fairchild Semiconductor SINGLE TIMER Scan PDF
    LM555CN Harris Semiconductor Timer for timing delays and oscillator applications Scan PDF
    LM555CN Unknown Historical semiconductor price guide (US$ - 1998). From our catalog scanning project. Historical PDF
    LM555CN Unknown Historical semiconductor price guide (US$ - 1998). From our catalog scanning project. Historical PDF
    LM555CN Unknown Shortform IC and Component Datasheets (Plus Cross Reference Data) Short Form PDF
    LM555CN Unknown Shortform Data and Cross References (Misc Datasheets) Short Form PDF
    LM555CN/A+ Unknown Historical semiconductor price guide (US$ - 1998). From our catalog scanning project. Historical PDF
    LM555CN_NL Fairchild Semiconductor Single Timer Original PDF
    LM555CN/NOPB National Semiconductor LM555 Timer; Package: MDIP; No of Pins: 8; Qty per Container: 40/Rail Original PDF
    LM555CN/NOPB Texas Instruments LM555 - Highly stable 555 timer for generating accurate time delays and oscillation 8-PDIP 0 to 70 Original PDF

    LM555CN Datasheets Context Search

    Catalog Datasheet MFG & Type PDF Document Tags

    NE555N

    Abstract: LM555CN NE555N DIP-8 NE555N DIP-14 ka555 LM555CM KA556 NE555N timer KA555D LM555
    Text: Analog and Mixed Signal Products CD-ROM Selection Guide Timers Product LM555CN [NE555N] [KA555] Description Timer, Single Package Packing Code1 Suffix DIP-8 T LM555CM [KA555D] SOP-8 T, T&R KA555I DIP-8 T SOP-8 T, T&R DIP-14 T DIP-14 T DIP-16 T SOP-16 T, T&R


    Original     		PDF LM555CN NE555N] KA555] LM555CM KA555D] KA555I KA555ID LM556CN KA556] KA556I NE555N LM555CN NE555N DIP-8 NE555N DIP-14 ka555 LM555CM KA556 NE555N timer KA555D LM555

    rfp50n06 equivalent

    Abstract: BUZ71A equivalent buz11 equivalent BUZ71 equivalent IRF9540 equivalent RFP12N10L equivalent irf740 equivalent ICM755 IRF640 equivalent 555 timer for lm555cn
    Text: Intersil Timers, Oscillators, Rectifiers and MOSFETs Timers/Oscillators Mfr.Õs Type Max. Output Frequency Astable Description Package Type LM555CN Timer for Time Delays and Oscillator Applications 10 KHz (Typ.) +4.5 V to +18 V @ 15 mA 8 Lead PDIP ICM7555IBA


    Original     		PDF LM555CN ICM7555IBA ICM7555IPA ICM7556IPD ICM7555, ICM7242IPA 250AB IRF630 O-220AB RFP50N06 rfp50n06 equivalent BUZ71A equivalent buz11 equivalent BUZ71 equivalent IRF9540 equivalent RFP12N10L equivalent irf740 equivalent ICM755 IRF640 equivalent 555 timer for lm555cn

    LM555CH

    Abstract: LM555cj LM555 LM555J LM555CMM LM555CN LM555H LM555 TIMER APPLICATIONS LM555 Timer National Semiconductor of lm555cn
    Text: LM555/LM555C Timer General Description Features The LM555 is a highly stable device for generating accurate time delays or oscillation. Additional terminals are provided for triggering or resetting if desired. In the time delay mode of operation, the time is precisely controlled by one external resistor and capacitor. For astable operation as an oscillator,


    Original     		PDF LM555/LM555C LM555 SE555/NE555 LM555CH LM555cj LM555J LM555CMM LM555CN LM555H LM555 TIMER APPLICATIONS LM555 Timer National Semiconductor of lm555cn

    sn76131

    Abstract: tlo72cp TOSHIBA 2N3055 M53207P 2N3055 TOSHIBA KIA7313AP kia7640ap LA5530 M5L8155P TBB1458B
    Text: ACTIVE ELECTRONICS COMPONENTS CROSS REFERENCE GUIDE 2SC429GTM 2SC458 2SC458LG 2SC503 2SC504 2SC510 2SC512 2SC519 2SC520A 2SC594 2SC699A 2SC780 2SC809-1 2SC945 2SC3012 2SC3074 2SC3114 2SC3115 2SC3116 2SC3117 2SC3134 2SC3135 2SC3138 2SC3143 2SC3144 2SC3145 2SC3157


    Original     		PDF 2SC429GTM 2SC458 2SC458LG 2SC503 2SC504 2SC510 2SC512 2SC519 2SC520A 2SC594 sn76131 tlo72cp TOSHIBA 2N3055 M53207P 2N3055 TOSHIBA KIA7313AP kia7640ap LA5530 M5L8155P TBB1458B

    LM555

    Abstract: LM555 timer FOR PULSE TRAIN GENERATION lm555 national semiconductor LM555 application note lm555 application notes Lm555 timer lm555 timer circuit lm555 application LM 555 timer LM555 timer pulse generator
    Text: LM555 Timer General Description Features The LM555 is a highly stable device for generating accurate time delays or oscillation. Additional terminals are provided for triggering or resetting if desired. In the time delay mode of operation, the time is precisely controlled by one external resistor and capacitor. For astable operation as an oscillator,


    Original     		PDF LM555 200mA SE555/NE555 LMD18200 LMD18200 10-Sep-2001] /chechi/LM555 LM555 timer FOR PULSE TRAIN GENERATION lm555 national semiconductor LM555 application note lm555 application notes Lm555 timer lm555 timer circuit lm555 application LM 555 timer LM555 timer pulse generator

    UPC451C

    Abstract: LM324N CA301AE CA081E upc451g CA082E CA339E CA358AE UA741CN ca224e
    Text: CROSS REFERENCE : BY MANUFACTURER INDUSTRY STANDARD NEAREST SGS-THOMSON TYPE ANALOG DEVICES INDUSTRY STANDARD NEAREST SGS-THOMSON TYPE INDUSTRY STANDARD NEAREST SGS-THOMSON TYPE ICM7555ISA TS555ID MC1741CD UA741CD ICM7556IDP TS556IN MC1741CP1 UA741CN OP295GS


    Original     		PDF ICM7555ISA TS555ID MC1741CD UA741CD ICM7556IDP TS556IN MC1741CP1 UA741CN OP295GS TS3V912AID UPC451C LM324N CA301AE CA081E upc451g CA082E CA339E CA358AE UA741CN ca224e

    LM555

    Abstract: NE555V lm5555 SNAS548B LM555CMM LM555CMMX LM555CMX lm555 texas 100AV
    Text: LM555 www.ti.com SNAS548B – MAY 2004 – REVISED JULY 2006 LM555 Timer Check for Samples: LM555 FEATURES APPLICATIONS • • • • • • • • • • 1 2 • • • • • • Direct replacement for SE555/NE555 Timing from microseconds through hours


    Original     		PDF LM555 SNAS548B LM555 SE555/NE555 NE555V lm5555 SNAS548B LM555CMM LM555CMMX LM555CMX lm555 texas 100AV

    LM555

    Abstract: NE555V lm555cn 555cn 555CM lm555 texas SNAS548C lm5555 LM555CM LM555 timer pulse generator
    Text: LM555 www.ti.com SNAS548C – FEBRUARY 2000 – REVISED MARCH 2013 LM555 Timer Check for Samples: LM555 FEATURES DESCRIPTION • • • The LM555 is a highly stable device for generating accurate time delays or oscillation. Additional terminals are provided for triggering or resetting if


    Original     		PDF LM555 SNAS548C LM555 SE555/NE555 NE555V lm555cn 555cn 555CM lm555 texas SNAS548C lm5555 LM555CM LM555 timer pulse generator

    LM555

    Abstract: lm555 national semiconductor LM555 timer FOR PULSE TRAIN GENERATION LM555 application note LM555 as a monostable multivibrator LM555CN ne555 national semiconductor lm555 application lm555 pulse schematic diagram LM555CM
    Text: LM555 Timer General Description Features The LM555 is a highly stable device for generating accurate time delays or oscillation. Additional terminals are provided for triggering or resetting if desired. In the time delay mode of operation, the time is precisely controlled by one external resistor and capacitor. For astable operation as an oscillator,


    Original     		PDF LM555 LM555 200mA SE555/NE555 lm555 national semiconductor LM555 timer FOR PULSE TRAIN GENERATION LM555 application note LM555 as a monostable multivibrator LM555CN ne555 national semiconductor lm555 application lm555 pulse schematic diagram LM555CM

    LM555

    Abstract: circuit diagram of pulse position modulator LM555 timer FOR PULSE TRAIN GENERATION ne555 national semiconductor lm555 national semiconductor LM555 Timer NE555 pin configuration LM555CN LM555 timer datasheet lm555 timer circuit
    Text: LM555 Timer General Description Features The LM555 is a highly stable device for generating accurate time delays or oscillation. Additional terminals are provided for triggering or resetting if desired. In the time delay mode of operation, the time is precisely controlled by one external


    Original     		PDF LM555 LM555 200mA SE555/NE555 CSP-9-111S2) circuit diagram of pulse position modulator LM555 timer FOR PULSE TRAIN GENERATION ne555 national semiconductor lm555 national semiconductor LM555 Timer NE555 pin configuration LM555CN LM555 timer datasheet lm555 timer circuit

    schematic diagram atx Power supply 500w

    Abstract: pioneer PAL 012A 1000w inverter PURE SINE WAVE schematic diagram 600va numeric ups circuit diagrams winbond bios 25064 TLE 9180 infineon smsc MEC 1300 nu TBE schematic diagram inverter 2000w DK55 circuit diagram of luminous 600va UPS
    Text: QUICK INDEX NEW IN THIS ISSUE! Detailed Index - See Pages 3-24 Digital Signal Processors, iCoupler , iMEMS® and iSensor . . . . . 805, 2707, 2768-2769 Connectors, Cable Assemblies, IC Sockets . . . . . . . . . . . 28-568 RF Connectors . . . . . . . . . . . . . . . . . . . . . . Pages 454-455


    Original     		PDF P462-ND P463-ND LNG295LFCP2U LNG395MFTP5U US2011) schematic diagram atx Power supply 500w pioneer PAL 012A 1000w inverter PURE SINE WAVE schematic diagram 600va numeric ups circuit diagrams winbond bios 25064 TLE 9180 infineon smsc MEC 1300 nu TBE schematic diagram inverter 2000w DK55 circuit diagram of luminous 600va UPS

    N5741V

    Abstract: 9667PC LM317T RC4558DN SN75150N rc741dn MC3346P RC4136N "cross reference" NE555V UC494C
    Text: Analog Integrated Circuits Cross Reference This Cross Reference lists Analog Devices by either industry standard part number or by manufacturer’s part number for which there is an ON Semiconductor nearest or similar replacement. For devices not listed, or for


    Original     		PDF r14153 CRD800/D N5741V 9667PC LM317T RC4558DN SN75150N rc741dn MC3346P RC4136N "cross reference" NE555V UC494C

    Untitled

    Abstract: No abstract text available
    Text: LM555 LM555 Timer Literature Number: SNAS548B LM555 Timer General Description Features The LM555 is a highly stable device for generating accurate time delays or oscillation. Additional terminals are provided for triggering or resetting if desired. In the time delay mode of


    Original     		PDF LM555 LM555 SNAS548B 200mA SE555/NE555

    FSQ510 Equivalent

    Abstract: BTA12 6008 bta16 6008 ZIGBEE interface with AVR ATmega16 Precision triac control thermostat thyristor t 558 f eupec gw 5819 diode transistor a564 A564 transistor BSM25GP120 b2
    Text: SEMICONDUCTORS MCU/MPU/DSP Atmel. . . . . . . . . 167, 168, 169, 170, 171, 172 Blackhawk. . . . . . . . . . . . . . . . . . . . . . . . . 173 Cyan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174 Cypress. . . . . . . . . . . . . . . 175, 176, 177, 178


    Original     		PDF GP-20) FSQ510 Equivalent BTA12 6008 bta16 6008 ZIGBEE interface with AVR ATmega16 Precision triac control thermostat thyristor t 558 f eupec gw 5819 diode transistor a564 A564 transistor BSM25GP120 b2

    LM555

    Abstract: ne555 national semiconductor LM555 application note ne555 national RETS555X LM555 timer FOR PULSE TRAIN GENERATION 555 timer for lm555cn LM555CN Lm555 timer LM555 Timer National Semiconductor
    Text: LM555 Timer General Description Features The LM555 is a highly stable device for generating accurate time delays or oscillation. Additional terminals are provided for triggering or resetting if desired. In the time delay mode of operation, the time is precisely controlled by one external resistor and capacitor. For astable operation as an oscillator,


    Original     		PDF LM555 200mA SE555/NE555 AN-270: AN-694: LMD18200 LMD18200 4-Nov-95 ne555 national semiconductor LM555 application note ne555 national RETS555X LM555 timer FOR PULSE TRAIN GENERATION 555 timer for lm555cn LM555CN Lm555 timer LM555 Timer National Semiconductor

    BA6869

    Abstract: KA3525A lb1838 KA7500B application note ba5938 ka7632 KA7500B LM4136 ba6296 SMPS KA3525A
    Text: Analog and Mixed Signal Products Table of Contents Selection Guide Digital Video. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2


    Original     		PDF O-263 BA6869 KA3525A lb1838 KA7500B application note ba5938 ka7632 KA7500B LM4136 ba6296 SMPS KA3525A

    555 timer datasheet

    Abstract: sine wave generator using ic 555 7555 low power timer ic IC 555 dark detector alarm using 555 timer 555 timer astable multivibrator ic 555 timer ic 555 timer astable multivibrator schmitt trigger using ic 555 555 timer
    Text: by Tony van Roon Thank you Ron Harrison from Micron Technology, Inc. for pointing out the errors in this tutorial! The 555 timer IC was first introduced around 1971 by the Signetics Corporation as the SE555/NE555 and was called "The IC Time Machine" and was also the very first and only


    Original     		PDF SE555/NE555 60sec. referens\FAKTA\TUTORIALS\555\555 20Timer-Oscil. 555 timer datasheet sine wave generator using ic 555 7555 low power timer ic IC 555 dark detector alarm using 555 timer 555 timer astable multivibrator ic 555 timer ic 555 timer astable multivibrator schmitt trigger using ic 555 555 timer

    Untitled

    Abstract: No abstract text available
    Text: www.fairchildsemi.com LM 5 5 5 Single T im e r Features Description • • • • • The LM555 is a highly stable controller capable of producing accurate timing pulses. With a monostable operation, the time delay is controlled by one external resistor and one


    Original     		PDF LM555 200mA)

    LM373

    Abstract: MC1303L LM566 "direct replacement" transistor BD 540 LYS MFC6030 LM566 equivalent LM3039 SN72558P LM370 SN72741P
    Text: Edge Index by Product Family Here is the new Linear Data Handbook from National. It gives complete specifications for devices useful in building nearly all types of electronic systems, from communica­ tions and consumer-oriented circuits to precision instrumentation and computer designs.


    OCR Scan     		PDF 92260-Fontenay-Aux-Roses 25956F HX3866 LM373 MC1303L LM566 "direct replacement" transistor BD 540 LYS MFC6030 LM566 equivalent LM3039 SN72558P LM370 SN72741P

    Untitled

    Abstract: No abstract text available
    Text: m H A R R IS CA555, LM555 S E M I C O N D U C T O R Timers for Timing Delays and Oscillator Applications in Commercial, Industrial and Military Equipment March1993 Features Description • • • • • • • • The CA555 and CA555C are highly stable timers for use in


    OCR Scan     		PDF CA555, LM555 CA555 CA555C

    LM555N

    Abstract: IC lm555n LM555 LM555n timer MC1555 CA555 CA0555E CA0555M SE555 CA555C
    Text: HA RR IS SENICON] S E CT OR LIE D 0 Ü M 7 D S ? 2 1 1 S E M I C O N D U C T O R Timers for Timing Delays and Oscillator Applications in Commercial, Industrial and Military Equipment M arch 1993 Description Accurate Timing from Microseconds through Hours


    OCR Scan     		PDF CA555, LM555 200mA SE555, NE555, MC1555, MC1455 LM555N IC lm555n LM555 LM555n timer MC1555 CA555 CA0555E CA0555M SE555 CA555C

    MIC710

    Abstract: XC6875 MC1741L C4558C SG425 mc7724c NE533V General Instrument data book 741p SN75107
    Text: Master Index and Cross Reference Guide M IL-M -38510 Program and Chip Information Operational Amplifiers Voltage Regulators Interface Circuits Voltage Comparators Consumer Circuits Other Linear Circuits Package Information and Mounting Hardware Application Notes


    OCR Scan     		PDF 110-E77-20. MIC710 XC6875 MC1741L C4558C SG425 mc7724c NE533V General Instrument data book 741p SN75107

    LM555

    Abstract: LM55SCN LM555CH RETS555X LM555J LM555CJ monostable adjustable one-shot pulse application LM555 as a monostable multivibrator LM555H lm555 application
    Text: LM555/LM555C S6E D • bSDllSM D077flbfl DTfi H N S C E S3 National m J k NATL SEni<:0N]> linear Semiconductor 'f 'S I \H LM555/LM555C Timer General Description The LM555 is a highly stable device for generating accurate time delays or oscillation. Additional terminals are provided


    OCR Scan     		PDF LM555/LM555C D077flbfl LM555/LM555C LM555 TL/H/7851-16 LM55SCN LM555CH RETS555X LM555J LM555CJ monostable adjustable one-shot pulse application LM555 as a monostable multivibrator LM555H lm555 application

    Untitled

    Abstract: No abstract text available
    Text: CA555, CA555C, LM555, LM555C HARRIS S E M I C O N D U C T O R Timers for Timing Delays and Oscillator Application in Commercial, Industrial and Military Equipment November 1996 Features Description • • • • • • • • The CA555 and CA555C are highly stable timers for use in


    OCR Scan     		PDF CA555, CA555C, LM555, LM555C CA555 CA555C