Computer Science Quiz

The 8-bit signed binary number (2's complement) 1111 0011(2) corresponds to which decimal value:

• -13(10)

• 243(10)

• -115(10)

• 12(10)

In the hexadecimal system (Hexa), the number 5F4B(16) corresponds to which binary value:

• 0101 1111 0110 1011(2)

• 0101 1101 0100 1011(2)

• 0101 1111 0100 1011(2)

• 0101 1111 0100 1101(2)

The binary number 11101.01(2) corresponds to which decimal value:

• 27.25

• 29.25

• 29.74

• 27.25

Main memory is:

• HDD (Hard Disk Drive)

• ROM (Read Only Memory)

• FDD (Floppy Disk Drive)

• RAM (Random Access Memory)

Which of the following components is not part of the central processing unit:

• General-purpose registers

• Input-output interface

• Control unit

• Arithmetic logic unit

In the central processing unit, the component connecting CU, ALU, and the registers is called:

• External bus

• BIU (Bus Interface Unit)

• System bus

• Internal bus

In computer representation, the addition of 8-bit signed integers 91 + 63 results in:

• No result due to overflow

• No result due to carry out of the highest bit

• 154

• -102

The difference between the 8-bit unsigned binary numbers 0110 1011(2) and 0101 0111(2) is:

• 0001 1000(2)

• 0001 0100(2)

• 0000 1010(2)

• 0000 0100(2)

The product of the 8-bit unsigned binary numbers 0000 1101(2) and 0000 1011(2) is:

• 1001 0111(2)

• 1000 1111(2)

• 1000 0111(2)

• 1010 0111(2)

The quotient and remainder of the 8-bit unsigned binary numbers 0110 0011 (2) and 0000 1101(2) is: