Component Names
IBM created a new naming system for the new components created for System/360, although well-known old names, like IBM 1403 and IBM 1052, were retained. In this new naming system, components were given four-digit numbers starting with 2. The second digit described the type of component, as follows:
| 20xx: | Arithmetic processors, for example the IBM 2030, which was the CPU for the IBM System/360 Model 30. |
| 21xx: | Power supplies and other equipment intimately associated with processors, for example the IBM 2167 Configuration Unit. |
| 22xx: | Visual output devices, for example the IBM 2250 and IBM 2260 CRT displays, and the IBM 2203 line printer for the System/360 model 20. |
| 23xx: | Direct-access storage devices, for example the IBM 2311 and IBM 2314 disk drives, the IBM 2321 Data Cell; Main storage such as the IBM 2361 Large Capacity Storage (Core Storage, Large Core Storage or LCS) and the IBM 2365 Processor Storage. |
| 24xx: | Magnetic tape drives, for example the IBM 2401, IBM 2405 and IBM 2415. |
| 25xx: | Punched card handling equipment, for example the IBM 2501 (card reader), IBM 2520 (card punch); IBM 2540 (reader/punch) and IBM 2560 (Multi-Function Card Machine or MFCM). |
| 26xx: | Paper tape handling equipment, for example the IBM 2671 paper tape reader. |
| 27xx: | Communications equipment, for example the IBM 2701, IBM 2705, IBM 2741 interactive terminal and the IBM 2780 batch terminal. |
| 28xx: | Channels and controllers, for example the IBM 2821 Control Unit, IBM 2841 and IBM 2844. |
| 29xx: | Miscellaneous devices, for example the IBM 2914 Data Channel Switch and the IBM 2944 Data Channel Repeater. |
Read more about this topic: IBM System/360
Famous quotes containing the words component and/or names:
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—Mary Heaton Vorse (1874–1966)
“Every man who has lived for fifty years has buried a whole world or even two; he has grown used to its disappearance and accustomed to the new scenery of another act: but suddenly the names and faces of a time long dead appear more and more often on his way, calling up series of shades and pictures kept somewhere, “just in case” in the endless catacombs of the memory, making him smile or sigh, and sometimes almost weep.”
—Alexander Herzen (1812–1870)