High-level and Low-level Languages

One instruction of high-level code represents many instructions of machine code

• High-level languages

• Low-level languages

The same code will work for many different machines and processors.

• High-Level Languages

• Low-Level Languages

The programmer can easily store data in lots of different structures (e.g. lists and arrays) without knowing about the memory structure.

• High-Level Languages

• Low-Level Languages

Code is easy to read, understand and modify.

• High-Level Languages

• Low-Level Languages

Must be translated into machine code before a computer is able to understand it

• High-Level Languages

• Low-Level Languages

You don't have much control over what the CPU actually does so programs will be less memory efficient and slower

• High-Level Languages

• Low-Level Languages

One instruction of assembly code usually only represents one instruction of machine code

• High-Level Languages

• Low-Level Languages

Usually written for one type of machine or processor and won't work on any others.

• High-Level Languages

• Low-Level Languages

The programmer needs to know about the internal structure of the CPU and how it manages the memory

• High-Level Languages

• Low-Level Languages

Code is very difficult to read, understand and modify.

• High-Level Languages

• Low-Level Languages