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A keyboard has which type of asynchronous transfer mode ?

  • Serial
  • Parralel
  • Optimal
  • Joint

Answer: Option A

Explanation:

In serial transfer each bit is sent one after the another in a sequence of event and requires just one line.

Similar Questions :

1. User programs interact with I/O devices through ?

  • Operating System
  • Hardware
  • Buses
  • Processor

Answer: Option A

2. __ is a single control line that informs destination unit that a valid is available on the bus ?

  • Ping
  • Token
  • Handshake
  • Strobe

Answer: Option D

3. Asynchronous means ?

  • Not in step with the elapse of time
  • Not in step with the elapse of address
  • Not in step with the elapse of data
  • Not in step with the elapse of control

Answer: Option A

4. __ read the data by reflecting pulses of laser beams on the surface ?

  • Magnetic disk
  • Optical disk
  • Floppy disk
  • ROM

Answer: Option B

5. What is full form of LED ?

  • Low Emitting Diode
  • Light Emitting Diode
  • Light Emitting Data
  • Light Encounter Diode

Answer: Option B

Explanation:

In optical mouse we use pair of LED.

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