Quantity   Component name
1 × ATTiny85 Microprocessors, Microcontrollers, DSPs / ARM, RISC-Based Microcontrollers
2 × 74HC595 Shift register
2 × Common cathode 7 segment display
16 × 330 ohm resistor
2 × LED Fiber Optics / Emitters
1 × 1k resistor (optional)