Test questions. 1. Function # _____ corresponds to function and of 3 variables. X y z F1 f2 f3 f4 f5

1. Function # _____ corresponds to function AND of 3 variables.

A. 1 B. 2 C. 3 D. 4 E. 5

2. The truth table for XOR gate is:

3.A small-scale integration (SSI) device contains __________ gates in a single chip.

A. thousands of B. From10 to 1000 C. More than 100

D. From 10 to 100 E. less than 10

4. (XY)´ is algebraic expression of ________ function.

A. XOR B. XNOR C. NOR D. NAND E. AND

NOR is dual to A. XOR B. XNOR C. NOR D. NAND E. AND

OR is complement to A. XOR B. XNOR C. NOR D. NAND E. AND

7. A buffer produces the _____ function.

A. complement B.dual C. transfer D. inhibition E. implication

8. Inverter can have _____ input (s). A. 1 B.2 C. 3 D.4 E. A lot of

9. For the gate below function F is correspondent to column ____.

A.1 B.2 C.3 D.4 E 5

10. Duality principle states that every algebraic expression

A. remains valid if the operators and identity elements are changed.

B. remains valid if the operators and identity elements are interchanged.

C. deducible from the postulates of Boolean algebra remains valid if the operators and identity elements are changed.

D. deducible from the postulates of Boolean algebra remains valid if the operators and identity elements are interchanged.

E. deducible from the postulates of Boolean algebra remains valid if the operators are changed.

LABORATORY WORK # 4.

SEVEN-SEGMENT DISPLAYS

Aims: investigate 1-digit and 2-digit seven-segment displays operation, understand the process of code conversion for the device, and make a comparison between 1 and 2 digit seven-segment displays.