1. EPROM can be ?

UVPROM

EEPROM

both UVPROM and EEPROM

none of the above

Answer: both UVPROM and EEPROM

Explanation:

EPROM - Erasable Programmable ROM UVPROM - Ultraviolet Programmable ROM EEPROM - Electrically Erasable Programmable


2. What is the computer main memory ?

Hard drive and RAM

CD-ROM and hard drive

RAM and ROM

CMOS and hard drive

Answer: RAM and ROM

Explanation:


3. The storage element for a static RAM is the ________ ?

diode

resistor

capacitor

flip-flop

Answer: flip-flop

Explanation:


4. Which of the following memories is volatile ?

ROM

EROM

RAM

Flash

Answer: RAM

Explanation:


5. What is the requirement of full subtractor circuit ?

Three inputs and two outputs

Three inputs and one output

Two inputs and two outputs

Two inputs and three outputs

Answer: Three inputs and two outputs

Explanation:


6. A full adder has ?

2 inputs, 2 outputs

3 inputs, 2 outputs

2 inputs, 1 output

3 inputs, 1 output

Answer: 3 inputs, 2 outputs

Explanation:


7. A half adder has ?

1 input and 1 output

2 inputs and 1 output

1 input and 2 outputs

2 inputs and 2 outputs

Answer: 2 inputs and 1 output

Explanation:


8. A half adder is a ________ circuit ?

Combinational

Sequential

Both A and B

None

Answer: Combinational

Explanation:

The difference bit output of a half subtractor is the same as


9. How many clock pulses will be required to completely load serially a 5-bit shift register ?

2

3

4

5

Answer: 5

Explanation:


10. The bit sequence 0010 is serially entered (right-most bit first) into a 4-bit parallel out shift register that is initially clear. What are the Q outputs after two clock pulses ?

0000

0010

1000

1111

Answer: 1000

Explanation: