Logic Circuits (630211)

Marking Assignments

1) 1) The decimal equivalent of hex number 1A53 is

6739
6793
6973
6379

2) Convert the 0101111002 number to octal.

2728
1748
1728
2748

3) Convert the fractional binary number 0001.0010 to decimal.

1.40
1.20
1.125
1.80

4) The largest unsigned decimal number that can be represented in binary using six bits is_______.

63
64b
127
128


5) Which of the following is the most widely used alphanumeric code for computer input and output?

ASCII
Gray
Parity
EBCDIC


6) Which of these numbers is the same as 101101110102?

164610
AB5H
5BA16
B7216

7) (124)8 =

(52)10
(84)10
(52)BCD
(84)BCD

8) Which of the following is an invalid BCD code?

0011
1001
1000
1100

9) The octal equivalent of the number (700)16 is:

1000
3400
700
7000

10) A decimal fraction can be converted to binary by using the repeated division-by-2 method.

True
False

11) Convert the octal number 768> to binary

1111102
1101112
1111002
1001112

12) Convert binary 11001111 to hexadecimal.

CE16
8F16
DF16
CF16

13) 1) Convert the fractional binary number 10010.0100 to decimal.

24.50
18.40
16.25
18.25

14) 1) Binary-coded-decimal 011110010011 is_________in binary.

011110010011
010110101111
001100011001
001100110011

15) In computers, subtraction is carried out generally by

signed magnitude method
2's complement method
1's complement method
BCD subtraction method

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