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Which part of the instruction tells the microprocessor what operation is to be performed?
Wiki User
∙ 7y ago
The part of the instruction that tells a computer what operation to perform is variously called the "operation code", "op code", "opcode", "operation", "order code", "instruction code", "function designator", "function", "prefix", "designator", etc. depending on the specific computer and the (arbitrary) preferences of the designers of that computer architecture about terminology.
Some computers have special instructions that use parts of the instruction in a different way than other instructions do to provide additional operations (e.g. PDP-8 in the OPR instruction used the fields used by most other instructions for memory addressing as a "microcoded" operation request, PowerPC has "primary opcode" and an optional "extended opcode").
There are some computer architectures that do not even use instructions (e.g. dataflow computers) or have instructions without an opcode (e.g. Transport Triggered Architectures, Forth virtual machine) but they are still fairly rare.
Wiki User
∙ 7y ago
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What is the use of instruction decoder?
Instruction decoder takes bits stored in the instruction register and decodes it and tells to CPU what it need to do for it and enable the components for the operation. Simply, instruction decoder is like a dictionary. It tells the meaning of the instruction.
What is 3 byte instruction in microprocessor?
A two-byte instruction gives the specific function instruction in two bytes, or two words. The first specifies the opcode, which tells the microprocessor what operation will occur. The second specifies the operand, or the data that the operation is done on.
What is the set of instructions that tells the computer how to perform a particular task?
Instruction down to hardware level break down toOpcode ( Operation Code ) followed by Operands ( Data onto which such operation is to be performed )Collection/Series of these Opcode + Operands help in performing a particular task - Thus a small Program is created.
How are instructions given to a computer?
An extremely simple thing called machine code. Im not insulting you with the extremely simple thing, that just means its easy for the computer to follow. Machine code tells the computer what to do and when to do it.
What type of device is a microprocessor?
It "tells" something what to do. For example if you pressed caps lock it would "tell" the computer to type in capitals.
What is the definition of instruct?
Instruction has three meanings: 1. An instruction is something that someone tells you to do. 2. If someone gives you instruction in a subject or skill, they teach it to you. 3. Instructions are clear and detailed information on how to do something.
What is the definition of instructions?
Instruction has three meanings: 1. An instruction is something that someone tells you to do. 2. If someone gives you instruction in a subject or skill, they teach it to you. 3. Instructions are clear and detailed information on how to do something.
In 4th grade math what tells which operation to do first?
Order of operToons
Isn't correct system unit tells the rest of computer how to carry out a program's instruction?
No, Control unit does By Bilco
What tells the rest of the computer how to carry out the program's instructions?
Device drivers. These are software programs and services which teach your operating system how to interface with the hardware components that are connected to it either internally (Graphics card, sound devices, hard drives, Network adapters like LAN or Wifi adapters, CD/DVD drives) or externally (computer screens, flash/thumbdrives, keyboards, mice, printers, etc)
What is considered a function of the instruction set for the CPU?
The Functions of the instruction set is to instruct All CPU's with a set of instructions: Tells the CPU where to find data When to read the data What to do with the data. Hope that helps Don
What is addressing mode of instruction?
Addersing mode of a microprocesso tells the programmer that in which mode the instruction works . There are 5 addressing mode in 8080 , viz. Direct , register, indirect , immidiate ,implict addressing modes.
