I2C uses how many lines? (i) 1 (ii) (iii) 2 (iv) 8

Back to the 2025 paper

Module 5: External Communication Interface

20252m

I2C uses how many lines?

(i) 1
(ii)
(iii) 2
(iv) 8

Worked SolutionAI Assisted

Answer: (iii) 2

Explanation: I2C (Inter-Integrated Circuit) uses 2 lines: SDA (Serial Data) and SCL (Serial Clock). It is a half-duplex, synchronous, multi-master/multi-slave bus. The question lists (ii) blank and (iii) 2, so 2 is correct. (SPI uses 3-4 lines, UART uses 2 lines but not I2C).**

Similar questions

MICROPROCESSORSHow many lines are used in the basic SPI communication? (i) 5 (ii) 2 (iii) 4 (iv) 320242m MICROPROCESSORSThe 8051 has how many I/O ports? (i) 1 (ii) 4 (iii) 2 (iv) 520252m MICROPROCESSORSThe number of hardware interrupts in 8051 is? (i) 2 (ii) 3 (iii) 4 (iv) 520232m MICROPROCESSORSWhat is the bit transmitting or receiving capability of mode 1 in serial communication? (i) 8 bits (ii) 10 bits (iii) 11 bits (iv) 12 bits20212m

PreviousWhich instruction decrements and jumps if not zero? (i) DJNZ (ii) AJMP (iii) CJNE (iv) NOP NextInterfacing a DC motor generally requires (i) Driver circuit (ii) Counter (iii) Keyboard (iv) Crystal oscillator

Official AppAndroid App

PYQDeck for Android

Solve BEU previous-year exam papers anywhere, anytime. Fast search, offline paper viewing, and step-by-step solutions designed specifically for your phone.

Get on Google Play