Name four functions of a computer memory unit.

### Why this is right A computer can carry out an instruction only if it can access that instruction and the data it operates on. Memory therefore holds current inputs, program instructions, and results produced during processing, and supplies them to the processor when needed. ### The concept A **memory unit** is the part of a computer system that stores information in a form the computer can retrieve. It holds **data**, such as numbers or text, while the computer is working on them, and stores **instructions**, which tell the computer what operations to perform. During a task, the computer may also keep **intermediate results**, temporary answers needed before the final result is ready. Memory makes these items available to the **processor**, the component that follows instructions and processes data. This working role differs from long-term storage, such as a drive, which keeps files for later use even when the processor does not currently need them. | Function | What it means | |---|---| | Hold data | Keep input information available for processing | | Store instructions | Keep program steps available | | Retain intermediate results | Preserve temporary answers during a task | | Supply the processor | Provide requested information when needed | ### What a good answer covers - Memory holds the data currently being processed. - It stores the instructions that direct the computer’s work. - It retains intermediate results until later steps need them. - It supplies the processor with the information and instructions it requests. ### Terms - **Data**: information a computer can process, such as numbers, text, or measurements. - **Instruction**: a command that tells a computer what operation to perform. - **Intermediate result**: a temporary answer produced during a task and used in a later step. - **Processor**: the component that executes instructions and processes data. - **Long-term storage**: a place, such as a drive, that keeps files for later use rather than supplying only the computer’s immediate working needs. ### Remember Memory holds the information the computer is using now, including its instructions, working data, and temporary results.