| タイトル | Programmable data communications controller requirements |
| 本文（外部サイト） | http://hdl.handle.net/2060/19770024915 |
| 著者所属（英） | Teledyne Brown Engineering |
| 発行日 | 1977-07-01 |
| 言語 | eng |
| 内容記述 | The design requirements for a Programmable Data Communications Controller (PDCC) that reduces the difficulties in attaching data terminal equipment to a computer are presented. The PDCC is an interface between the computer I/O channel and the bit serial communication lines. Each communication line is supported by a communication port that handles all line control functions and performs most terminal control functions. The port is fabricated on a printed circuit board that plugs into a card chassis, mating with a connector that is joined to all other card stations by a data bus. Ports are individually programmable; each includes a microprocessor, a programmable read-only memory for instruction storage, and a random access memory for data storage. |
| NASA分類 | COMPUTER SYSTEMS |
| レポートNO | 77N31859
SD77-MSFC-2115
NASA-CR-150384 |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/181257 |
