Describe: When entering the adjustment, press the first key K1 to subtract, press the second key K2, the additional operations. Press the third key K3, implementation date \ time to adjust and \ timing functions, and other digital flashes, press the plus or minus one or two keys to the specific date and time can be adjusted. Press the fourth key K4, can be time \ date switch, 8-bit LED digital tube will display the time or date, a 24-hour clock. Time display format is: Time- minutes- seconds date display format: day- month- year. Computer system with real-time displays the current time and date functions.

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