A-level Computing/AQA/Computer Components, The Stored Program Concept and the Internet/Hardware Devices

Input and Output Devices Know the main characteristics, purpose and suitability of contemporary devices (see the Teacher Resource Bank), and understand their principles of operation, including methods of error checking (check digit).

Secondary Storage Devices Explain the need for secondary storage within a computer system, know the main characteristics, purpose and suitability, and understand the principles of operation of contemporary devices (see the Teacher Resource Bank). Compare the capacity and speed of access of various media and make a judgement about their suitability for different applications