Digital Computer Electronics - Study Mode

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[#106] The simplified form of the Boolean expression (X + Y + XY)(X + Z) is

(A) X + Y + Z

(B) XY + YZ

(C) X + YZ

(D) XZ + Y

Correct Answer

(C) X + YZ

[#107] De Morgan's first theorem says that a NOR gate is equivalent to a bubbled _____ gate.

(A) AND

(B) XAND

(C) XOR

(D) NOR

Correct Answer

(A) AND

[#108] Addition of 10 2 and 11 2 is

(A) 100 2

(B) 101 2

(C) 111 2

(D) 110 2

Correct Answer

(B) 101 2

[#109] How many bits are required to encode all twenty six letters ten symbols, and ten numerals?

(A) 5

(B) 6

(C) 2

(D) 3

Correct Answer

(B) 6

[#110] Which of the following is not functionally a complete set?

(A) AND, OR

(B) NAND

(C) NOR

(D) AND, OR, NOT

Correct Answer

(A) AND, OR