Digital Computer Electronics - Study Mode

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[#56] The Gray code for decimal 7 is

(A) 111

(B) 1011

(C) 100

(D) 101

Correct Answer

(C) 100

[#57] The time required for a pulse to decrease from 90 to 10 percent of its maximum value is known as

(A) rise time

(B) decay time

(C) binary level transition period

(D) propagation delay

Correct Answer

(B) decay time

[#58] Conversion of binary number 101000010111 2 to hexadecimal number is

(A) D8F9 16

(B) A8B9 16

(C) A17 16

(D) D9F8 16

Correct Answer

(C) A17 16

[#59] _dominates the LSI field, and _ is used extensively where lowest power consumption is necessary.

(A) NMOS, PMOS

(B) PMOS, CMOS

(C) NMOS, CMOS

(D) MOSFET, PMOS

Correct Answer

(C) NMOS, CMOS

[#60] Conversion of an octal number 143 8 to its decimal number is

(A) 90 10

(B) 971 10

(C) 99 10

(D) 107 10

Correct Answer

(C) 99 10