a. Operand: The part of a machine
instruction that that
specifies data that is to be operating on or manipulated. For example in an instruction, ADD A to B, A and B are the
operands and ADD is the operation code. In the instruction READ TRACK 9,
SECTOR 32, track and sector are the operands.
instruction that that
specifies data that is to be operating on or manipulated. For example in an instruction, ADD A to B, A and B are the
operands and ADD is the operation code. In the instruction READ TRACK 9,
SECTOR 32, track and sector are the operands.
b. Registers: In a computer, a register is one of a small set of data holding places
that are part of a computer processor. A register must be large enough to hold
an instruction – for example, in a 32-bit instruction computer, a register must
be 32 bits in length.
that are part of a computer processor. A register must be large enough to hold
an instruction – for example, in a 32-bit instruction computer, a register must
be 32 bits in length.
c. Mnemonic Code: A computer programming term in computer programming language that uses some people-friendly commands in
order to be readily memorised by human programmers. Example of mnemonic codes
includes, LDA {value} which means Lead the Accumulator with a given value.
Another example is STO E,A which means store the content of register E in
register A.
order to be readily memorised by human programmers. Example of mnemonic codes
includes, LDA {value} which means Lead the Accumulator with a given value.
Another example is STO E,A which means store the content of register E in
register A.
d.
Opcode: The part or parts of a machine language instruction which determines what kind of action the computer should take, e.g. add, jump, load, store. In any particular instruction
set certain fixed
bit positions
within the instruction word contain the op code, others give parameters
such as the addresses or registers involved.
Opcode: The part or parts of a machine language instruction which determines what kind of action the computer should take, e.g. add, jump, load, store. In any particular instruction
set certain fixed
bit positions
within the instruction word contain the op code, others give parameters
such as the addresses or registers involved.
e.
Address Locator: Address locator also referred to as geo-locator or
internet protocol (IP) address is a computer algorithm that is used to specify
the location of a given computer.
Address Locator: Address locator also referred to as geo-locator or
internet protocol (IP) address is a computer algorithm that is used to specify
the location of a given computer.
