| 摘要 |
PURPOSE:To set many patterns with a simple circuit by providing an address generation means generating a time series of an address data by a pattern possible for setting change and a storage means inputting the said data and outputting a bit pattern as the time series. CONSTITUTION:A binary-coding 2<n>-adic counter 1 inputs a clock signal CL and outputs count data D1n...D13.D12.D11 being an n-digit binary data. n-Set of setting circuits 2 input data D1i (i=1-n) and a control signal Si and output a data D2i. The data D2i is the data D1i, its inverse or a voltage signal V of logical value '0'. A ROM 3 is a ROM of 2<n>-wordX1-bit constitution, the address is designated by the address data D2i being an n-digit binary data as above to read an output data D0. A bit pattern is written sequentially to each address of the ROM 3. In changing control signals S1-Sn, one string bit pattern different therefrom is generated.
|
