1. What are the functions of main
memory? What are the measuring
units of memory?
Your answer
Answers
Explanation:
It holds the data and instructions that the Central Processing Unit (CPU) needs. Before a program can run, the program is loaded from some storage medium into the memory. This allows the CPU direct access to the program.
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Explanation:
Memory is part of a computer that stores data and/or instructions that are to be executed. This memory has a finite size which is measured in bytes , with modern systems using the derivative unit gigabyte ( one billion bytes , abbreviated as GB ) . A typical high end system nowadays can have from 8 to 32GB of memory , which is usually referred to as RAM in the context of computing.
The processor (CPU) handles the task of executing a program . Basically , a program can be summed up as a long list of instructions for the CPU to execute (such as adding 2 numbers together , multiplication , jumping to another instruction , etc ). The processor will execute these sequentially , in the order they are present in the program.
An input device can refer to anything that provides data or instructions . This can be a keyboard , a punch tape reader , a cassette drive , a simple hard drive/SSD , etc.
The memory contains the instructions/data for a program.
The Central Processing Unit is typically referred to as the “brain” of a computer. It takes the instructions out of memory , executes them and writes the result back to memory.