HT8693SP mono audio amplifier integrated
SN74LS154N demultiplexer narrow body
SN74LS247N TTL decoder from BCD to 7 segment
CH340G USB to serial TTL IC
74LS153 dual 4 in multiplexer
74LS47 BCD to segment decoder
KA2209 audio amplifier IC
SN74LS48N 16pin decoder driver
SN74LS139N straight plug DIP-16 logic circuit