1Pcs New DIY Kits AT89C2051 Electronic Clock Suite Electronic Parts & Components

Directions for use: 1.Function keys: S1 – function selection button, S2 – function extension buttons, S3 – value add to 1 button. 2.Functions and operation instructions: when operating, for a short period of time (less than 1 second) press S1, can be in more than six function continuous loop. Midway if long press (more than 2 seconds) S1, immediately return to the clock function state. (1) clock function: after electrify display 10:10:00 namely (2)Adjust the function of time:Short press S1 at once, that is, the current time as the flashing status, press S2 is hours plus 1, press the S3 is minutes plus 1, second not adjustable (3) the alarm clock function: short press the second S1, display status for 22:10:00, colon for long light. Press S2 is hours plus 1, press the S3 is minutes plus 1, second is adjustable. It will display – : — : — when press more than 23 hours ,means shut the alarm clock function. As the buzzer alarm sirens for 3 seconds (4) the countdown function: short press S1 three times, display status is 0. Press S2 displayed a high, from low to press S3 is corresponding plus 1, when press S2 with 7 times in set time state, start the countdown, again press S2 will once again into the adjustment function, and stop the countdown (5) stopwatch function:short press S1 four times, display status is 00:00:00, colon for long light. Press S2 start stopwatch, again press S2 is stop timing, press S3 is a stopwatch reset when stop timing (6)counter function: five short press S1 and displays a status for 00:00:00, press S2 counter plus 1, press the S3 counter reset Packing List: 1 set DIY AT89C2051 Electronic Clock Suite