| 摘要 |
PURPOSE:To improve operativity by providing one digital memory, one microcomputer (MC), and one key matrix respectively so that >=2 channel selecting circuit share them. CONSTITUTION:The memory 3 is stored with all pieces of channel information, and a channel selection button in the key matrix 4 is pressed to allow both channel selecting circuits 14 and 14' to select a channel 1. When the channel selection button is pressed, address information on one channel is outputted from the output terminal (a) of the MC2. This address information is applied to the input terminal of the memory 3 and also applied to decoder drivers 9 and 9' of the circuits 14 and 14'. Simultaneously, a write command signal is applied from the MC2 to the memory 3 through a line (c), and latch input signals are applied to the decoder drivers 9 and 9' of the circuits 14 and 14' through lines (e) and (j), so the address of one channel in the memory 3 is specified and one-channel signals are supplied to display elements 10 and 10' to display ''1''. Then, one-channel information is outputted from the memory 3 to the input terminal (b) of the MC2 and supplied from the MC to DA converting circuits 5 and 5'.
|
