Quantity   Component name
1 × PIC16F876A Microprocessors, Microcontrollers, DSPs / ARM, RISC-Based Microcontrollers
4 × 7 segment display, common anode
4 × BC636 Discrete Semiconductors / Transistors, MOSFETs, FETs, IGBTs
1 × 20Mhz crystal
2 × 22pf capacitors For the crystal oscillator
8 × 270 Ohm 1/4w Resistors for the display
4 × 10k Ohm 1/4w Resistors for the PNP base