Practical case: Selectable Frequency Divider
Level: Medium – Build a binary frequency divider using a 74HC393 ripple counter with a selectable output stage.
Binary counter, Binary counter_Medium, Digital Electronics, Medium
Medium
Practical case: 0 to 9 BCD Decimal Counter
Level: Medium | Build a 0-9 BCD counter using the 74HC90 IC to visualize binary progression via LEDs.
Practical case: 0-9 counter with TTL-compatible reset
Level: Medium — Build a decimal counter that advances from 0 to 9 and resets automatically using a TTL-compatible AND gate.
Practical case: Conveyor belt object counter
Level: Medium – Build an optical object counter with decimal outputs and an automatic batch reset.
Practical case: Automatic Reservoir Pump Controller
Level: Medium | Construct a transistor-driven relay circuit to automatically control a water pump using a float switch.
Practical case: Overvoltage protection
Level: Medium – Disconnect a critical load using a normally closed relay contact when a voltage threshold is exceeded.