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Digital Computer Electronics

Digital Computer Electronics
Conversion of an octal number 478 to its binary number is

11110112
1100112
None of these
1001112
1100112

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Digital Computer Electronics
The ASCII code is a 7-bit code for

other symbols
numbers
letters
All of these
None of these

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Digital Computer Electronics
A combinational logic circuit which is used when it is desired to send data from two or more source through a single transmission line is known as

demultiplexer
multiplexer
encoder
None of these
decoder

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Digital Computer Electronics
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.

SSI, 100
SSI, 75
None of these
SSI, 10000
SSI, 1000

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Digital Computer Electronics
Which of the following Boolean algebra rules is wrong?

1 . x = 1
0 + A = A
A + A = A
1 + A = 1
None of these

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Digital Computer Electronics
Which of the following TTL subfamily is the fastest

standard TTL
high-speed TTL
low-speed TTL
None of these
schottky TTL

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