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24_13215898d3d1914b1a93d0641f60918d3
2010-09-27 16:59:05

Read only memory, or ROM, is a type of storage media that is used by computers and other electronic devices. The data stored in ROM cannot be modified, therefore it is largely used to distribute firmware. The most straightforward type of ROM is about as old as semiconductor technology. It is called mask ROM, and it was introduced along with the integrated circuit. Mask ROM is made up of a grid of word lines, called the address input, and bit lines, called the data output, that are...

0_7ff1450147d43590cc8979d37a051b51
2010-09-08 11:08:26

Firmware is a term commonly used to represent the small fixed programs and data structures that internally control various electronic devices. The Institute of Electrical and Electronics Engineers Standard Glossary of Software Engineering Terminology defines firmware as "The combination of a hardware device and computer instructions and data that reside as read-only software on that device." Typical examples of devices containing firmware range from products such as remote controls or...

2010-09-02 14:56:06

A control store is the element of a CPUs control unit that stores the CPU's micro program and is usually accessed by a micro sequencer. A control store is usually executed as a diode-selection of read-only memory. This tradition dates back to 1947 when the program timing matrix on the MIT Whirlwind was initially introduced. The earliest models of IBM mainframe had read-only control store; however, the System/370 and successor models were made and loaded their micro programs from floppy disks...

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Word of the Day
omadhaun
  • A fool; a simpleton: a term of abuse common in Ireland and to a less extent in the Gaelic-speaking parts of Scotland.
This word is partly Irish in origin.