the BJT TTL inverter will be predicted using SPICE. Use a Q2N3904 for all of the transistors, and a D1N4002 for the diode. Add VCC and ground. Connect the output to the load. Use a load of 90pF. … (Budget: $30-250, Jobs: Electronics, Engineering, Microcontroller, Report Writing, Verilog / VHDL)
