SN74LS00N
Texas Instruments
Quad 2-input positive-NAND gate from the low-power Schottky TTL family.
74LS Series PDIP-14
Manufacturer
Texas Instruments
American semiconductor company; analog ICs, logic, microcontrollers and timers.
Official site: www.ti.com
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LM358
Texas Instruments
Dual general-purpose operational amplifier that runs from a single supply.
Comparators PDIP-8