programming languages and IDEs

Question 1

Machine code

Answer 1

• have an opcode instruction and
  address or data to use
• binary representation of instructions
  in a format the CPU can decode and
  execute

Question 2

Low level language

Answer 2

• written in assembly code
• translated by an assembler into
  machine code
• used for embedded systems
• used for device drivers
• works on one type of processor only
• programmer works with memory
  directly
• harder to write and understand
• memory efficient
• code is fast to execute

Question 3

High level languages

Answer 3

• source code written in languages
• translated by complier or interpreter
  into machine code
• quicker and easier to write and
  understand
• work on many type of processors
• one code instruction translate to many
  macine code instructions
  -lots of data structures to use
• less memory efficient
• code can be slower to execute if not
  optimised

Question 4

complier

Answer 4

translates source code from high- level languages into object code and then into machine code
- whole program is translated in
machine code before its run

Question 5

Advantages of complier

Answer 5

• execution is faster
• code is optimised
• original source code is a secret

Question 6

Disadvantages of complier

Answer 6

• difficult to write code as the program
  will not run with syntax error
• code needs to be recompiled when
  code changes
• design for specific type of processor

Question 7

Interpretor

Answer 7

Translates source code from high level languages into machine code
- program is translated line by as program is running

Question 8

Advantages of inerpreters

Answer 8

• easy to write code as program will always run until it find a syntax error
• doesnt have to be recompiled when code changes
• easier for beginners to learn coding

Question 9

Disadvantages of interpretors

Answer 9

• execution is slower
• code is not optimised
• source code is needed