| 摘要 |
PURPOSE:To read characters, one by one, and to improve an arithmetic speed by adding a read means which reads out words specified with a word address and a character address in specified character units. CONSTITUTION:Words 0-3 held in a data latch 1 are inputted to selectors 2 and 3. The selector 2 selects one of the words according to the word address and outputs arithmetic data in word units. The selector 3, on the other hand, outputs one of the words according to the word address and inputs it to selectors 6 and 7. The selector 6 selects four 8-bit characters and the selector 7 selects eight 4-bit characters. The selector 8 selects one of the characters and outputs it as arithmetic data, character by character. The selectors 6, 7, and 8 are controlled with signals indicating a character type as a character address and the in-word position of the character. |
