​High level vs Low Level Languages and Translators

​What is machine code?

• ​A low level language....

• That uses binary instruction that CPU can decode and execute

• Different instructions have different binary values

​What is machine code?

• ​A low level language....

• That uses binary instruction that CPU can decode and execute

• Different instructions have different binary values

​What is machine code?

​What is assembly language?

​What is assembly language?

• ​A low level language....

• That has simple instructions such as LOAD, each of which corresponds to a single machine code instruction.

• It must be translated into machine code (object code) to be understood by CPU.

• But this translation process is faster than translating high level language into machine code

​What is assembly language?

• ​A low level language....

• That has simple instructions such as LOAD, each of which corresponds to a single machine code instruction.

• It must be translated into machine code (object code) to be understood by CPU.

• But this translation process is faster than translating high level language into machine code

​What is assembly language?

• ​A low level language....

• That has simple instructions such as LOAD, each of which corresponds to a single machine code instruction.

• It must be translated into machine code (object code) to be understood by CPU.

• But this translation process is faster than translating high level language into machine code

​Advantages of high level languages

• ​•A high-level language is easier to learn

  •Programs can be written faster in a high-level language

  •It is easier to understand and debug a high-level language

​Whiteboard.
Low level vs High Level Languages.
Explain each and explain some advantages/disadvantages of each

​A compiler translates the whole of a high level language program into machine code at once.
(Unless there is a syntax error....in which case no machine is made)

​An error (syntax) message will be given to the user but no machine code will be produced

​An interpreter is program that translates high level source code, line by line, into machine code, which is then executed (by the CPU via FDE; the CPU does not need the interpreter to understand the machine code made after it is made)

1) When high level code is compiled does the user need the compiler? NO

2) When high level code is interpreted does the user need the interpreter installed to run the code? YES

1) When high level code is compiled what is given to the user (by the developer) ?
Just the machine (object) code

2) When high level code is interpreted what is given the user(by the developer)? The source code (and possibly the interpreter although the developer may assume the user has this already)

​Whiteboard up Compiler vs Interpreter.
(What they are/do and pros and cons)