CA Chapter 3

The binary number 1100 1011 1101(2) corresponds to which hexadecimal value:

• DBC(16)

• CDB(16)

• CBD(16)

• BDC(16)

In the 80-bit floating-point representation, how many bits is the exponent:

• 14 bits

• 13 bits

• 16 bits

• 15 bits

According to the IEEE 754/85 standard for double-extended precision floating-point representation, the length is:

• 80 bits

• 64 bits

• 32 bits

• 16 bits

How many characters are included in the extended ASCII code:

• 256

• 512

• 1024

• 128

In a computer's information transmission system, the bus types are:

• Data bus, address bus, multipurpose bus (can be used as both data bus and address bus)

• Parallel bus, serial bus, half-duplex bus

• Internal processor bus, main memory bus, input-output bus

• Data bus, address bus, control bus

In the 32-bit floating-point representation, how many bits is the significand:

• 20 bits

• 22 bits

• 23 bits

• 21 bits

In computer representation, addition of signed integers gives incorrect results when:

• Adding two numbers of the same sign results in a number of the opposite sign

• Adding two numbers of different signs

• Adding two positive numbers results in a negative number

• Adding two negative numbers results in a positive number

The Program Counter (PC) will automatically increment to point to the next instruction:

• After the instruction is loaded into the Instruction Register (IR)

• After the Control Unit (CU) decodes the instruction in the IR

• Before the instruction is loaded into the IR

• After the CU sends the control signal to execute the instruction

What is BCD code:

• Code using binary bits to represent ASCII characters

• Code using binary bits to represent hexadecimal digits

• Code using binary bits to represent octal digits

• Code using binary bits to represent decimal digits

In the 64-bit floating-point representation, how many bits is the sign bit:

• 3 bits

• 2 bits

• 1 bit

• 0 bits