| 摘要 |
<p>PURPOSE:To select the combination of various kinds of constants, by reading out data corresponding to a selecting signal to be supplied for a prescribed period from a memory in a one-chip microcomputer to use them the constants for control operation. CONSTITUTION:When a reset signal is supplied from an input terminal 1, a separating signal is outputted from an output terminal 5a to a controlling device 6 and terminals 6b-6e are separated from data lines D1-D4. The reset signal is delayed for a fixed period through a control signal generating circuit 2 and supplied to a selecting signal generating circuit 3, so that a signal ''0'' is sent to the data lines D3 and D4. Consequently, a selecting signal ''0011'' is supplied to a microcomputer 5 and data corresponding to the constant for control operation corresponding to said selecting signal are read out from an internal memory in the microcomputer 5. At the stop of the separating signal, the microcomputer 5 processes the data by using the readout constant.</p> |
