GCSE Computing 2.5 #1 Low and High Level Languages

What is machine code?

• Instructions and data in binary

• Serial number of the CPU

• Instructions and data in human readable form

• Instructions and data in assembly code mnemonics

Which one of the following statements about machine code is correct?

• Machine code is quick to learn

• Machine code is easy to debug

• Machine code is easy to read

• It is hard to remember the binary codes used

What is a MNEMONIC?

• A single action that can be performed by a computer.

• A symbol that represents an instruction in assembly language.

• A high level language keyword.

• A register used inside a CPU A register used inside a CPU.

What is assembly code?

• Another name for machine code

• High-level programming language

• Low-level programming language

• Type of object code Type of object code

Why were high-level languages developed?

• Low-level language was too easy

• They were created by accident

• Low-level languages are hard to remember and use

• Computers were getting too advanced

Which of the following is NOT a property of a High Level Language?

• Enables programs to be developed quickly

• Commands resemble "natural" language

• Commands are translated into machine code before they can be run

• Enable the programmer to directly control system hardware

The image shows a machine code instruction. What term is used to describe the circled area?

• Operand

• Mnemonic

• Opcode

• Compiler

The image shows a machine code instruction. What term is used to describe the circled area?

• Operand

• Mnemonic

• Opcode

• Compiler

Here are two lines from an assembly language program. What is the correct term to describe the contents of the area with the red border?

• Operands

• Mnemonics

• Memory locations

• Machine Code

Which one of the following statements is FALSE?

• Different types of microprocessors might have different instruction sets

• Not every type of high level language is suitable for every task

• Assembly language can be understood by computers

• Low level language programs require less memory than high level languages