# Computer Science - Digital Computer Electronics

### Exercise :: Digital Computer Electronics - Section 4

46.

In boolean algebra, the overbar stands for the NOT operation, the plus sign stands for the _____ operation.

 A. AND B. OR C. NAND D. NOR E. None of the above

Explanation:

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47.

The reduced form of the Boolean expression (A+B)(A+C) is:

 A. AB+AC B. A+B+C C. AC+B D. A+BC E. None of the above

Explanation:

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48.

A full-adder adds _____ bits, and producing a SUM and a _____

 A. 8, SUBTRACTION B. 3, CARRY C. 16, DIVIDE D. All of the above E. None of the above

Explanation:

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49.

The radix of the binary number is:

 A. 3 B. 1 C. 2 D. 10 E. None of the above

Explanation:

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50.

An XOR gate recognizes only words with an _____ number of 1's.

 A. even B. odd C. different D. All of the above E. None of the above