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Memory |   |
Hardware - Processor and Memory
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This section discusses the physical arrangement of memory, along with the various types of memory found in a computer system. The memory of a computer is constructed from microchips. Memory can be thought of as a set of pigeon holes or cells with each one having a unique address. Each pigeon hole can store 8 bits of data. Older memory chips have 30 pins connecting the memory to the computer. It is more usual to have 72 or 128 pins now. A computer contains two types of memory, Random Access Memory (RAM) and Read Only Memory (ROM).
 A module of RAM showing 30 pins.
 A ROM chip |