Q.1

34FC + AD31 = ________.

  • E22D
  • E31D
  • E21D
  • E42D
Q.2

The binary subtraction 1 – 1 = ________.

  • difference = 0
    borrow = 0
  • difference = 1
    borrow = 0
  • difference = 1
    borrow = 1
  • difference = 0
    borrow = 1
Q.3

The binary addition of 1 + 1 = ________.

  • sum = 1
    carry = 1
  • sum = 0
    carry = 0
  • sum = 1
    carry = 0
  • sum = 0
    carry = 1
Q.4

Solve this binary problem: 1001 × 1100 = ________.

  • 01110001
  • 01111000
  • 01101100
  • 01101110
Q.5

When subtracting 6 from 9 using 2's-complement methods, the ________ is 2's complemented before the addition.

  • six
  • multiplier
  • nine
  • two
Q.6

A 74HC283 can be used to implement a(n) ________ adder.

  • 4-bit BCD
  • 8-bit BCD
  • 4-bit full
  • 8-bit full
Q.7

FC48 – AB91 = ________.

  • 5B77
  • 5267
  • 50B7
  • 5077
Q.8

In BCD addition, the value ________ is added to any invalid code group.

  • 010101
  • 0U812
  • 100110
  • 0110
Q.9

A four-bit adder can perform ________.

  • addition
  • subtraction
  • logical AND
  • All of the above
Q.10

When performing binary addition using the 2's-complement method, an ________ can occur if ________ are of the same ________; the error is indicated by a(n) ________.

  • error, both numbers, magnitude, negative sign
  • overflow, both numbers, sign, incorrect sign bit
  • overflow, signs, magnitude, incorrect sum
  • error, the signs, polarity, incorrect polarity
Q.11

The two's complement of 00001111 is ________.

  • 11111111
  • 11110000
  • 11110001
  • 11110111
Q.12

In AHDL macrofunctions, the first thing that should go into any source file is ________ your code.

  • a field of comments that documents
  • a library of
  • a function name of
  • the universal global definition of
Q.13

The concurrent section of the hardware description is where the ________ are interconnected.

  • functions
  • components
  • circuits
  • macrofunctions
Q.14

Negation is performed by simply performing the ________ operation.

  • 1's-complement
  • sign
  • surrogate
  • 2's-complement
Q.15

Inside a computer all arithmetic operations take place in the ________.

  • accumulator register
  • ALU
  • CPU
  • B register
Q.16

Solve this BCD problem: 0101 + 0110 = ________.

  • 00010111BCD
  • 00001001BCD
  • 00010001BCD
  • 00010011BCD
Q.17

–910 represented in eight-bit two's-complement notation is ________.

  • 11110111
  • 11111001
  • 11110110
  • 01111101
Q.18

The circuit shown is a(n) ________.

  • multiplexer
  • adder
  • comparator
  • converter
Q.19

The circuit shown is a(n) ________.

  • multiplexer
  • adder
  • comparator
  • converter
Q.20

The contents of the A register after is ________.

  • 0000
  • 0001
  • 1001
  • 1010
Q.21

A binary sum is made up of only 1s and 0s.

  • True
  • False
Q.22

Overflow indicators in ALU circuits indicate when add or subtract operations produce results that are too large to fit into four bits.

  • True
  • False
Q.23

When the 2's-complement system is used, the number to be subtracted is changed to its 2's complement and then added to the minuend.

  • True
  • False
Q.24

The inputs of a full adder are labeled A1, B1, and Cin.

  • True
  • False
Q.25

The range of negative numbers when using an eight-bit two's-complement system is –1 to –128.

  • True
  • False
Q.26

Full adders can add two numbers and need not have a carry input or a carry output.

  • True
  • False
Q.27

Larger number capacities may be obtained from 2-bit adders by paralleling them.

  • True
  • False
Q.28

If [A] = 10 and [B] = 01, then [A] + [B] = [ ].

  • True
  • False
Q.29

If no bits are designated inside square braces, [ ], it means the variable is the null set.

  • True
  • False
Q.30

The VHDL compiler requires libraries to be specified at the beginning of the code if components from those libraries are being used.

  • True
  • False
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