Digital Electronics - ECE Questions and Answers

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Assuming accumulator contain A 64 and the carry is set (1). What will register A and (CY) contain after SBI 0B7H?

12 H, 0

12 H, 1

DDH, 0

DDH, 1

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The Central Processing Unit (CPU) of the 16-processor system developed by hardware and software teams of C-DOT, Bangalore is configured around

Motorola 68020

Motorola 68040

Intel 80386

Intel 80486

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Figure shows an 8-bit LED display. A light circle means that a LED is ON (binary 1) and a dark circle means a LED is OFF (binary 0). What is the decimal equivalent of the binary number displayed?

100

121

144

172

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For NOR gate SR flip-flop, the 'no change' condition is

S = 0, R = 0

S = 1, R = 0

S = 0, R = 1

S = 1, R = 1

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Which type of gate is in the given figure?

NOR

NAND

EX-OR

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Which of the following will be hexadecimal number just for prior to F52B?

E 51 A

F 51 B

E 52 B

F 52 A

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A pair of 21114s can store __________ words of __________ bits each.

2114, 8

1024, 8

4228, 16

2114, 16

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In hexadecimal number system, A is equal to decimal number

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Which binary addition is incorrect?

1001.1 + 1011.01 = 10100.11

100010 + 1000101 = 1001010

0.0011 + 0.1110 = 1.1

1011.01 + 1001.11 = 10111