| 摘要 |
<p>The circuit comprises address selectors (1,2) for selecting the instruction signal from a CPU or a CRT driver (7) by selecting one switch between S1 and S2, memory units (3,4) for reading and writing data by the address signal selected by the read/write signal from the CPU, data selectors (5,6) for selecting data recorded in memories utilizing switches (Sa,Sb), and a CRT driver (7) for driving CRT by receiving data through the data selectors.</p> |
