4.3

Question 1

what is the language computers use?

Answer 1

machine code

Question 2

two types of computer programs

Answer 2

high level, low level

Question 3

what is a computer program?

Answer 3

list of instructions that enable a computer to perform a certain task

Question 4

3 things about high level language

Answer 4

1. requires no knowledge of the hardware and computer that will use the program
2. portable and can be used on different types of computers
3. easier to understand
4. quicker to write

Question 5

3 things about low level languages

Answer 5

1. can use special hardware
2. writes codes that are more efficient
3. includes machine-dependent instructions

Question 6

disadvantages of low level

Answer 6

1. takes long to de-bug programs
2. difficult to understand and write

Question 7

disadvantages of high level

Answer 7

1. programs take up more space
2. not able to use special hardware

Question 8

assembly language = ?

Answer 8

low level

Question 9

complier

Answer 9

1. translates high level –> machine code
2. one high level instruction –> several machine codes
3. programs run without the complier
4. usually distributed for general use
5. executable file of machine code produced

Question 10

interpreter

Answer 10

1. executes high level program one statement at a time
2. no executable file of machine code produced
3. program cannot run without the interpreter
4. used when a program is being developed

Question 11

assembler

Answer 11

1. low level –> machine code
2. executable file of machine code produced
3. one low-level statement is made into one machine code instruction
4. assembled programs used without the assembler
5. distributed for general use

Question 12

advantages and disadvantages of interpreter

Answer 12

advantage:
easier to de-bug and test during development
disadvantage:
program can’t be run without interpreter, takes longer to execute

Question 13

advantages and disadvantages of complier

Answer 13

advantage:
can be executed without the complier, takes up less space
disadvantage:
takes longer to write

Question 14

IDE is?

Answer 14

Integrated Development Environment

Question 15

IDE features?

Answer 15

code editors, translator, auto-correction, auto-completion