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Hassan
1.Standard TTL has a multiple emitter input transistor and a _____ output
A. totem-pole
B. bipolar
C. register
D. totem-pole
2.A shift register moves the _____ left or right. Serial loading means storing a word in a shift register by entering _____ bit per clock pulse. With parallel or broadside loading, it takes only one _____ pulse to load the input word.
A. light, eight, clock
B. right, eight, clock
C. bits, one, register
D. light, eight, clock
3.A flip-flop can store:
A. 1 bits of data
B. 2 bits of data
C. 3 bits of data
D. 1 bits of data
4.A logic circuit which is used to change a BCD number into an equivalent decimal number is
A. decoder
B. encoder
C. multiplexer
D. decoder
5.Cyclic codes are used in
A. data transfer
B. continuously varying signal representation
C. arithmetic and logical computation
D. data transfer
6.The digits used in a binary number system are _____ and _____
A. 9 and 0
B. 0 and 1
C. 1 and 2
D. 9 and 0
7.The 2-input XOR gate has a high output only when the input bits are _____
A. even
B. different
C. low
D. even
8.Conversion of binary number 10010102 to to its decimal number is
A. 7410
B. 9710
C. 7210
D. 7410
9.A combinational logic circuit which generates particular binary word or number is
A. decoder
B. multiplexer
C. encoder
D. decoder
10.Conversion of binary number 1100002 to hexadecimal is
A. 3016
B. 4016
C. 4316
D. 3016
11.Conversion of an octal number 1068 to binary number is
A. 11100102
B. 10001102
C. 11001102
D. 11100102
12.Conversion of binary number 1000112 to an octal number is
A. 438
B. 478
C. 498
D. 438
13.What is the hexadecimal equivalent of a binary number 10101111
A. AF
B. 9E
C. 8C
D. AF
14.The two basic technologies for digital ICs are bipolar and MOS. Bipolar technology is preferred for_____ and _____ whereas MOS technology is better suited to LSI.
A. SSI, MSI
B. MSI, LSI
C. SSI, LSI
D. SSI, MSI
15.Small-scale integration, abbreviated _____ refers to fewer than 12 gates on the same chip. Medium-scale integration (MSI) means 12 to 100 gates per chip. And large-scale integration (LSI) refers to more than _____ gates per chip.
A. SSI, 75
B. SSI, 100
C. SSI, 1000
D. SSI, 75
16.How many outputs signals can a gate have?
A. one
B. more than one
C. two only
D. one
17.Conversion of an octal number 1258 to its decimal number is
A. 9010
B. 8510
C. 8710
D. 9010
18.What is the main advantage of using MOSFET rather than bipolar transistor circuitary in ICs?
A. much greater complexity (more components) than bipolar circuits : better economy
B. higher operating speed than bipolar circuits
C. fewer power supply connections are required with MOS ICs
D. much greater complexity (more components) than bipolar circuits : better economy
19.The term sum-of-products in boolean algebra means
A. The AND function of several OR functions
B. The OR function of several AND functions
C. The OR function of several OR functions
D. The AND function of several OR functions
20.A shift register can be used for:
A. parallel to serial conversion
B. serial to parallel conversion
C. digital delay line
D. parallel to serial conversion
21.Names, numbers, and other information needed to solve a problem are called _____
A. program
B. instruction
C. data
D. program
22.A typical microcomputer may have up to 65,536 registers in its memory. Each of these registers, usually called a _____
A. address
B. memory location
C. registers
D. address
23.Conversion of binary number 100000000002 to decimal number is
A. 102410
B. 103410
C. 112410
D. 102410
24.Conversion of binary number 111112 to an octal number is
A. 358
B. 328
C. 378
D. 358
25.Conversion of binary number 1011102 to an octal number is
A. 358
B. 468
C. 568
D. 358
26.The hexadecimal number system is widely used in analyzing and programming ______
A. registers
B. chips
C. microprocessors
D. registers
27.A combinational logic circuit which is used to send data coming from a single source to two or more separate destinations is called as
A. decoder
B. encoder
C. multiplexer
D. decoder
28.How many full and half-adders are required to add 16-bit numbers?
A. 8 half-adders, 8 full-adders
B. 1 half-adders, 15 full-adders
C. 16 half-adders, no full-adders
D. 8 half-adders, 8 full-adders
29.An odd-parity generator produces an odd-parity bit to go along with the data. The parity of the transmitted data is _____ An XOR gate can test each received word for parity rejecting words with _____ parity.
A. odd, even
B. high, low
C. low, high
D. odd, even
30.A gate is a logic circuit with one or more input signals but _____ output signal.
A. two
B. double
C. one
D. two
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