DIGITAL ELECTRONICS MCQS SET 06

DIGITAL ELECTRONICS MCQS SET 06

1. In the expression A + BC, the total number of minterms will be ………
1. 2           2. 3           3. 4                4. 5
Answer: 4

2. Which of the following is non-saturating?
1. TTL        2. CMOS      3. ECL                 4. Both 1 and 2
Answer: 3
 

3. The number of digits in octal system is ………
1. 8        2. 7          3. 9              4. 10
Answer: 1

4. The access time of a word in 4 MB main memory is 100 ms. The access time of a word in a 32 kb data cache memory is 10 ns. The average data cache bit ratio is 0.95. The efficiency of memory access time is ………
1. 9.5 ns         2. 14.5 ns          3. 20 ns         4. 95 ns
Answer: 2

5. The expression Y = pM (0, 1, 3, 4) is …………..
1. POS            2. SOP          3. Hybrid            4. none of these
Answer: 1

6. An 8 bit DAC has a full scale output of 2 mA and full scale error of ± 0.5%. If input is 10000000 the range of outputs is ………….
1. 994 to 1014 μA         2. 990 to 1020 μA          3. 800 to 1200 μA
4. None
Answer: 1

7. Decimal 43 in hexadecimal and BCD number system is respectively……. and ……..
1. B2 and 01000011            2. 2B and 01000011       3. 2B and 00110100
4. B2 and 01000100
Answer: 2