High and low level languages

​Do Now

​1. Log in

2. Go to class notebook

3. Go to Paper 2 - High vs Low Level Languages

4. Complete Do Now under:

   High Level vs Low Level Languages

​Do Now Answers

​Homework

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Due 22/09/2023

​Big Question:

What is the difference between High Level and Low Level Languages?

• Compare how humans and computers interpret instructions

• Explain the differences between high- and low-level programming languages

• Describe why translators are necessary

• List the differences, benefits and drawbacks of using a compiler or an interpreter

Computers need clear, precise instructions, but they can only understand one language.

Machine language (0s and 1s). Instructions written in machine code can be directly executed by a computer’s Central Processing Unit (CPU).

​The first ever programs were written solely in machine code. Each instruction was entered by hand before being executed.

Operation code (opcode) tables were used to help with this, but it was still very time consuming.

​Questions ahead...

Multiple Choice

LOAD r1,
LOAD r2,
ADD r1,
DIV r1, #2

• Machine Code

• 
  High Level

• Assembly Language

Multiple Choice

Directly executable by the CPU. Written in 1's and 0's or Hex.

• Machine Code

• High Level Language

• 
  Assembly Language

Multiple Choice

01010101010100101010100101010101010011111001000100001010100101

• 
  Machine Code

• High Level

• Assembly Language

Multiple Choice

High and low-level programming languages can be understood by a computer.

• True

• False

​High Level

​High Level

​Assembly Language

​High Level

​Assembly Language

​01011001 00100111 10010100 01110011 10100101 11001010 11101000 01011101 00010011 01100010 10110110 11000100 01101111 10010011 01010101 11101101 10110111 00100110 11011001 01001001 01111001 00111010 10001011 01100101 11011001 01101010 11110010 00010011 00101101 01010011

​Machine Code

​Questions ahead...

Multiple Choice

Different CPUs require different assemblers.

• True

• False

Multiple Choice

Compilers translate high-level language into machine code.

• True

• False

Multiple Choice

An example of a high-level programming language is:

• Python

• Assembly

• 
  Machine code

• Cloud

Multiple Choice

Machine code uses the binary number system.

• True

• False

Multiple Choice

High-level languages need to be compiled into machine code before they can be used by a computer.

• True

• False

Multiple Choice

Machine code is easy to understand by a human.

• True

• False

Multiple Choice

Which of the following is NOT a translator?

• 
  Assembler

• 
  Interpreter

• 
  Interpreter

• Executable

Multiple Choice

Difficult to write in (but easier than Machine code)

• Interpreter

• Translator

• Compiler

• Assembly Langauge

Multiple Choice

Compilers, assemblers and interpreters are examples of this.

• Translator

• 
  Run time environment

• Editor

• 
  Error diagnostics

​Go to class notebook

Activity 1