BOJACK 10 Values 30 Pcs Series Low Power Schottky Logic IC，Including:SN74LS00N SN74LS02N SN74LS04N SN74LS08N SN74LS32N SN74LS47N SN74LS86N SN74LS90N SN74LS138N SN74LS245N IC chip kit.

They do indeed exist, and work.

Excellent

I think these are 74HC (CMOS) chips not 74LS. My chip tester identifies them as HC and they only draw uA not mA as defined on the 74LS datasheet.

Generally ok but the 7 segment chips are the opposite of those listed - Bojack insisted they are correct. One other ic had one bad output. Rest fine.

Nice education learning how these logic circuits work.

Arrived on time, as shown and described. Reasonable selection for logic circuit test purposes. If only using a breadboard, probably no need for the IC holders, but definately recommended if any are to be soldered in place.

Gut

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