| 摘要 |
PURPOSE:To display a function of the same degree without using a microcomputer having a ROM and a RAM of large capacity by processing the contents which cannot be processed completely by a first microcomputer, by a second microcomputer. CONSTITUTION:Address data, and RAM data are transferred from a serial transfer part 34 to a serial receiving part 40, when a load signal generated in a first microcomputer 3 is 'L', and when the signal is 'H', respectively. The transferred data are written successively in a second RAM 41, therefore, a second RAM 41 comes to have the same information as that of a first RAM 33. In a second ROM 42, a program being different from that of a first ROM 32 is stored, and a character generating IC 5 of the outside is controlled from a display processing part 43. In such a way, the whole screen on-screen display which cannot be expressed by only a first microcomputer 3 can be executed. |
