IC SHFT REG PAR-LD 8BIT 16-SOIChttp://www.ti.com/lit/ds/symlink/sn74ls165a.pdf..

BCD DECADE COUNTERS/ 4-BIT BINARY COUNTERS 16-DIPhttps://www.alldatasheet.com/view.jsp?Searchword=SN74LS165N..

IC D-TYPE POS TRG SNGL 16SOIChttp://www.ti.com/lit/ds/symlink/sn74ls175.pdf..

IC D-TYPE POS TRG SNGL 16DIPhttp://www.ti.com/lit/ds/symlink/sn74ls175.pdf..

4-BIT PARALLEL-ACCESS SHIFT REGISTERS 16-DIPhttps://html.alldatasheet.com/html-pdf/27392/TI/SN74LS195AN/25/1/SN74LS195AN.html..

4-STAGE PRESETTABLE RIPPLE COUNTERS 14-DIPhttps://html.alldatasheet.com/html-pdf/27404/TI/SN74LS197N/24/1/SN74LS197N.html..

IC DUAL MONO MULTIVIB 16-DIPhttp://www.ti.com/lit/ds/symlink/sn74ls221.pdf..

IC GATE XNOR 4CH 2-INP 14-DIPhttp://www.ti.com/lit/ds/symlink/sn74ls266.pdf..

QUAD SET-RESET LATCH 16-DIPhttps://www.alldatasheet.com/view.jsp?Searchword=SN74LS279N..

IC 9-BIT GEN/CHKER 14SO//media.digikey.com/pdf/Data%20Sheets/Texas%20Instruments%20PDFs/SN54(LS,S)280.pdf..

IC 4BIT BINARY FULL ADDER 16-DIPhttp://www.ti.com/lit/ds/symlink/sn74ls283.pdf..

DECADE COUNTER; 4-BIT BINARY COUNTER 14-DIPhttps://www.alldatasheet.com/view.jsp?Searchword=SN74LS290N..

SN74LS373N  SN74LS373NG4   SN74LS373 DIP-20IC OCT D-TYPE LATCH 20-DIPhttp://www.ti.com/lit/ds/symlink/sn74ls374.pdf..

IC HEX INVERTER 14-SOIChttp://www.ti.com/lit/ds/symlink/sn74lv04a.pdf..

IC HEX INVERTER 14-TSSOPhttp://www.ti.com/lit/ds/symlink/sn74lv04a.pdf..