Assembly
Computer Science: OCR A Level, topic 2.4.5
Assembly Language
Assembly language was the first type of programming language to come about after machine code programming.
Assembly language
- Assembly language was the first type of programming language to come about after machine code programming.
- Assembly language uses 3 letter mnemonics for key actions (such as INP for input), this makes them easier to remember for a developer.
Little man computer
- The Little Man Computer (LMC) is a virtual implementation of a Von Neumann processor that allows people to test out a basic assembly language compiler.
- This allows users to see how the registers and memory locations are used in a processor.
- The LMC has 11 assembly instructions.
Little man computer addressing
- Assembly language is low level and can use different types of address to access memory locations.
- The LMC only supports direct addressing of memory locations.
Test yourself on Assembly
How many letters do each mnemonic assembly instruction have?
What type of addressing does the LMC support?