CS Chapter 4 Processors Key terms words ALL

Machine code

• the programming language that the CPU uses.
• mode of addressing in which the contents of the memory location in the operand are used, which is the same as absolute addressing.
• mode of addressing used in assembly language programming, where a label is used instead of a value.
• mode of addressing in which the contents of the memory location found by adding the contents of the index register (IR) to the address of the memory location in the operand are used.
• mode of addressing in which the memory address used is the current memory address added to the operand.

Instruction

• a single operation performed by a CPU.
• the part of a machine code instruction that identifies the data to be used by the CPU.
• mode of addressing in which the contents of the contents of the memory location in the operand are used.
• mode of addressing used in assembly language programming, where a label is used instead of a value.
• a computer program before translation into machine code.

Assembly language

• a low level chip/machine specific programming language that uses mnemonics.
• short for operation code, the part of a machine code instruction that identifies the action the CPU will perform.
• mode of addressing used in assembly language programming, where a label is used instead of a value.
• the complete set of machine code instructions used by a CPU.
• the programming language that the CPU uses.

Opcode

• short for operation code, the part of a machine code instruction that identifies the action the CPU will perform.
• mode of addressing used in assembly language programming, where a label is used instead of a value.
• a single operation performed by a CPU.
• mode of addressing used in assembly language programming, where a label is used instead of a value.
• mode of addressing used in assembly language programming, where a label is used instead of a value.

Operand

• the part of a machine code instruction that identifies the data to be used by the CPU.
• a computer program after translation into machine code.
• the complete set of machine code instructions used by a CPU.
• mode of addressing used in assembly language programming, where a label is used instead of a value.
• mode of addressing in which the value of the operand only is used.

Source code

• a computer program before translation into machine code.
• mode of addressing used in assembly language programming, where a label is used instead of a value.
• short for operation code, the part of a machine code instruction that identifies the action the CPU will perform.
• mode of addressing used in assembly language programming, where a label is used instead of a value.
• a low level chip/machine specific programming language that uses mnemonics.

Assembler

• a computer program that translates programming code written in assembly language into machine code. Assemblers can be one pass or two pass.
• mode of addressing used in assembly language programming, where a label is used instead of a value.
• short for operation code, the part of a machine code instruction that identifies the action the CPU will perform.
• mode of addressing in which the contents of the memory location found by adding the contents of the index register (IR) to the address of the memory location in the operand are used.
• mode of addressing used in assembly language programming, where a label is used instead of a value.

Instruction set

• the complete set of machine code instructions used by a CPU.
• the complete set of machine code instructions used by a PCU

• mode of addressing used in assembly language programming, where a label is used instead of a value.
• the machine set of code instructions used by a CPU.

• the used by a CPU complete set of machine code instructions used by a CPU.

Object code

• a computer program after translation into machine code.
• mode of addressing used in assembly language programming, where a label is used instead of a value.
• short for operation code, the part of a machine code instruction that identifies the action the CPU will perform.
• mode of addressing used in assembly language programming, where a label is used instead of a value.
• mode of addressing used in assembly language programming, where a label is used instead of a value.

Addressing modes

• different methods of using the operand part of a machine code instruction as a memory address.
• mode of addressing used in assembly language programming, where a label is used instead of a value.
• mode of addressing used in assembly language programming, where a label is used instead of a value.
• mode of addressing used in assembly language programming, where a label is used instead of a value.
• mode of addressing in which the contents of the memory location in the operand are used, which is the same as absolute addressing.