99 Counter of 7-Segment
(Abstract): We make 7-segment counter in order to make an device that can use for counter time(second,minute,hour) that refer to our life time that we use everyday.
1) Introduction
. 7-Segment is an device that have 7 LED and each of them prepare as number 8 that have its own
name (a,b,c,d,e,f,g) in order to each of 7 LED.
. 7-Segment have 2 type: Common Cathode (join Ground) and Common Anode (join VCC).
2) Components
3) Schematic,PCB loyout,3D View
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| Schematic |
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| PCB Loyout |
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| 3D View |
4) Process of 7-Segment Counter
We want make 7-segment count from 0 to 99 that it run as second .So,we need to let signal 1Hz.
1) Put resistor variable 100K: it easy to comfort frequency 1Hz.
2) When we let VCC and GND run through resistor and capacitor through into IC 555 to entertain signal to make 1Hz.
3) Then we connect pin number 3 of IC 555 to pin number 1 of IC 4026 to entertain signal form binary code to decimal.
4) After that we connect pin of IC 4026 to pin 7-segment to each of letter from a to g.
5) Process of finding frequency 1Hz
6) Result
7) reference
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