| Que. 1 |
The threshold level for logic 1 in the TTL family is |
| A |
|
any voltage above 2.5v |
| B |
|
any voltage between 0.8v and 5.0v |
| C |
|
any voltage below 5.0v |
| D |
|
any voltage below V(cc) but above 2.8v |
|
| Que. 2 |
In order to add 1111+1101, we required |
| A |
|
one FA,one HA |
| B |
|
three FA |
| C |
|
three FA,one HA |
| D |
|
none of these |
|
| Que. 3 |
The number of different boolean function of 4 variables are |
| A |
|
2^16 |
| B |
|
16^2 |
| C |
|
4^2 |
| D |
|
16^4 |
|
| Que. 4 |
A carry look ahead adder is frequently used for addition because, it |
| A |
|
is faster |
| B |
|
more accurate |
| C |
|
used fewer gates |
| D |
|
costs less |
|
| Que. 5 |
The 2's complement representation of the decimal value 15 is |
| A |
|
1111 |
| B |
|
11111 |
| C |
|
111111 |
| D |
|
10001 |
|
| Que. 6 |
Sign extension is a step in |
| A |
|
Floating point multiplication |
| B |
|
Signed 16 bit integer addition |
| C |
|
Arithmetic left shift |
| D |
|
Converting a signed integer from one size to another. |
|
| Que. 7 |
Zero has two representation in |
| A |
|
sign magnitude |
| B |
|
1's complement |
| C |
|
2's complement |
| D |
|
none of the above |
|
| Que. 8 |
how many address lines are needed to address each memory location in a
2048*4 memory chip? |
| A |
|
10 |
| B |
|
11 |
| C |
|
8 |
| D |
|
12 |
|
| Que. 9 |
which code is used in Baudot system? |
| A |
|
five unit |
| B |
|
seven unit |
| C |
|
morse |
| D |
|
ASCII |
|
| Que. 10 |
If a counter having 10FFs is initally at 0,what count will if hold after
2060 pulses. |
| A |
|
000 000 1100 |
| B |
|
000 001 1100 |
| C |
|
000 001 1000 |
| D |
|
000 000 1110 |