From Computer Science Wiki
A computer is an electronic device for storing and processing data, typically in binary form, according to instructions given to it in a variable program.
Operating systems and application systems
Simple logic gates
- Outline the architecture of the central processing unit (CPU) and the functions of the arithmetic logic unit (ALU) and the control unit (CU) and the registers within the CPU.
- Describe primary memory.
- Explain the use of cache memory.
- Explain the machine instruction cycle.
- Identify the need for persistent storage.
- Describe the main functions of an operating system.
- Outline the use of a range of application software.
- Identify common features of applications.
- Define the terms: bit, byte, binary, denary/decimal, hexadecimal.
- Outline the way in which data is represented in the computer.
- Define the Boolean operators: AND, OR, NOT, NAND, NOR and XOR.
- Construct truth tables using the above operators.
- Construct a logic diagram using AND, OR, NOT, NAND, NOR and XOR gates.