| 摘要 |
<p>PURPOSE:To make the size of a system small, by constituting the system in LSI package unit. CONSTITUTION:An IC socket 22 is provided on a common bus board 1, and to the said socket 22, a CPU chip 23, ROM chips 24, 25, RAM chip 26, and I/0 chip 27 are fitted. An input and output device 30 is fitted to a terminal Q of the I/0 chip 27 via a connector 28 and a cable 29. A crystal oscillator 31 is connected to the side surface of the CPU chip. The said chip is provided with a PLA (Programmable Logic Array) and chip selection is made with this PLA.</p> |
