Combinational Circuits – Exercise – 3

146. The decimal value for E16 is:

(a) 1210
(b) 1310
(c) 1410
(d) 1460

Answer
Answer : (c)
Explanation
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147. Convert each of the decimal numbers to 8-bit two’s-complement form and then perform subtraction by taking the two’s-complement and adding.

(a) 0001  0011
(b) 0000  1110
(c) 0010  1110
(d) 1110  0000

Answer
Answer : (b)
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148. Convert each of the following signed binary numbers (two’s-complement) to a signed decimal number.000001011111110011111000

(a) –5    +4    +8
(b) +5    –4    –8
(c) –5    +252    +248
(d) +5    –252    –248

Answer
Answer : (b)
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149. Convert each of the signed decimal numbers to an 8-bit signed binary number (two’s-complement).+7–3–12

(a) 0000  0111    1111  1101    1111  0100
(b) 1000  0111    0111  1101    0111  0100
(c) 0000  0111    0000  0011    0000  1100
(d) 0000  0111    1000  0011    1000  1100

Answer
Answer : (a)
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150. Binary subtraction of a decimal 15 from 43 will utilize which two’s complement?

(a) 101011
(b) 110000
(c) 011100
(d) 110001

Answer
Answer : (d)
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