Should the display show any other decimal digit, you may press re-set switch S2 so that display shows ‘0’. When battery is connected to the circuit, the counter and display section around IC2 (CD4026/4033) is energised and the display would normally show ‘0’, as no clock input is available. While switch S2 is used for initial resetting of the display to ‘0’, depression of S1 simulates throwing of the dice by a player. In this circuit two tactile switches S1 and S2 have been provided. Its power consumption is also quite low because of use of CMOS ICs, and hence it is well suited for battery operation. The circuit uses only a handful of components. 7 segment display dice circuit 7 segment display dice circuit When using CD4026, pin 14 (cascading output) is to be left unused (open), but in case of CD4033, pin 14 serves as lamp test pin and the same is to be grounded. Decade counter IC CD4026 or CD4033 (whichever available) can be used as counter-cum-display driver. Here we have used a timer NE555 as an astable oscillator with a frequency of about 100 Hz. This 7 segment display dice circuit has been realized using an astable oscillator circuit followed by a counter, display driver and a display.
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