Machine code instructions

Timothy Herschell
Mind Map by Timothy Herschell, updated more than 1 year ago
Timothy Herschell
Created by Timothy Herschell about 4 years ago


Mind Map on Machine code instructions, created by Timothy Herschell on 02/05/2016.

Resource summary

Machine code instructions
1 Computers can ONLY understand machine code, 0s and 1s. Therefore, all instructions are written in machine code.
1.1 An instruction code is written in the form 0101 01 01001101
1.1.1 Op codes The 1st four binary digits are the 'op code'. Op codes are operations the computer has been coded to do automatically. For example, the code 0101 could make the computer copy a register to a memory location.
1.1.2 Registers All computers have registers. They are a volatile area to store data. Computers have different amounts of registers. If the register number is 2 digits long, the computer has only 4.
1.1.3 Operands The operands are the data or memory location actually being used in the operation
Show full summary Hide full summary


Mind Maps Essay Template
Cell Structure
Aggression mind-map for A2 AQA Psychology
Formula for Physics IGCSE edexcel
The Cold War Quiz
Niat Habtemariam
Mapas mentales con ExamTime
History- Medicine through time key figures
Macbeth Essay Notes
Mel M
Biology - B1 - AQA - GCSE - Keeping Healthy and Defending Against Infection
Josh Anderson
Tips for Succeeding on the Day of the Exam
Jonathan Moore
SFDC App Builder 1 (126-150)
Connie Woolard