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| Wednesday, October 31, 2018 |
| Term |
Definition |
| Access Time, timing |
A measurement of time in nanoseconds (ns) used to indicate the speed of memory. Access time is a cycle that begins the moment the CPU sends a request to memory and ends the moment the CPU receives the data it requested. Memory modules complete this process in as fast as 6ns for PC133mhz memory while older modules can take up to 80ns or more. |
| Array |
The area of the RAM that stores the bits. The array consists of rows and columns, with a cell at each intersection that can store a bit. The large rectangular section in the centre of the die where the memory is stored. |
| ASCII |
(American Standard Code for Information Interchange) A method of encoding text as binary values. The ASCII system requires nearly 256 combinations of 8-bit binary numbers to support every possible keystroke from the keyboard. |
| Asynchronous Cache |
Describes a type of L2 cache that is not in synch with the system clock. Asynchronous cache is slower than its synchronous counterpart, but is capable of delivering information to the CPU at a rate 10 percent faster than standard DRAM. Asynchronous cache was first used to boost memory performance in 386 systems and is still widely used today. |
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