| 摘要 |
<p>PURPOSE:To attain the time setting of a second value by instantaneously setting up hour/minute when second information from a clock circuit is '0', and when the second information is other than '0', counting up the second information, and at the overflow of the second information, setting up hour/minute in the clock circuit. CONSTITUTION:When time indication of hour/minute/second (e.g. 10:26:56) is applied to the clock circuit 1, a processing part 2 sets up 10:27:00 after four seconds from the time indication in a timer generating part 11 to execute the time setting setting of second. Thereby, the second time, i.e. 56sec, out of the time setting data is read out at the time setting indication and the read value is stored in a memory part 3. Then, 4sec are counted up on the basis of interruption every second from an interrupting circuit 13, and after 4sec from the time setting indication, the data of 10:27:00 are set up on a data bus 41. Then, the address of the clock circuit 1 is set up on an address bus 42 and data are written on the basis of a control signal 43. Consequently, data are written in the timer generating part 11 through a decoder 14.</p> |
