I am an electronics engineer, working and researching discrete components, integrated devices and electronic workbenches.
This user joined on 07/25/2019.
using TTL 74LS83 Adder IC and seveng segment display IC 74LS247 i add 2+2=4.
using 555 timer for input clock pulse with IC cd4026 and few gates i able to set 60 minutes and 60 seconds.
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