Lab Review 1

Convert the following octal number to hexadecimal: 0o31415

• 0x330d

• 0x3104

• 0x230d

• 0x2304

What is the ASCII string represented by the hexadecimal values 48 65 4C 4C 6F?

• Hullo

• Hello

• HeLLo

• HELLO

Which of the following correctly represents the range of values for an 8-bit number in 2’s complement, 1’s complement, and unsigned formats, respectively?

• -128 to 127, -127 to 127, 0 to 255

• -127 to 127, -128 to 127, 0 to 255

• -128 to 127, -128 to 127, 0 to 255

• 0 to 255, -127 to 127, -128 to 127

Given two 8-bit signed 2’s complement numbers: 01100101 (101) and 01011110 (94), what is the result of the addition and is there overflow?

• (−69), Overflow occurred

• (−61), No overflow

• (−61), Overflow occurred

• (−93), No overflow

What logic gate is represented by the circuit in the diagram?

• and

• or

• xor

• nor

Converting 4.125 to an IEEE floating point number

• 0 10000001 00001000000000000000000

• 0 10000010 00001000000000000000000

• 0 10000001 00000100000000000000000

• 0 10000010 00000100000000000000000

What logic does the following truth table reflect?

• AB+A’C’

• A’BC’

• AC + B

• AC’ + B’C

Which of the following expressions is logically equivalent to the expression: ¬(A∧B) using DeMorgan’s Law?

• ¬A∧¬B

• ¬A∨¬B

• A∨B

• ¬A⊕¬B

Assume you are working with 8-bit signed integers (two’s complement). What is the result of performing an arithmetic right shift by 2 on the number -64 (in binary: 1100 0000)?

• 1111 0000

• 0011 0000

• 1111 1100

• 1100 0000

Given the following CircuitSim circuit, what will the value of OUT be when A=0, B=1, and C=1?

• 01

• 10

• 00

• 11