Not all the IC's are starts from 74 , it is TTL series IC's starting numbers basically 74 series are digital IC's .
GATE
FLIP-FLOP
COUNTER
REGISTER
ADDER
ALU
A; There some 54 too with the same functions and then some more. 74xx are just a family of chips like 54xx are a family of chip. next time what is the difference I tell you
IC's which starts from 7 are most of them are digital ic's . not all the IC's starts with 7 for example LM380 audio IC CTC810 audio amplifier ic and lm317 voltage regulator ic ,NE555 timer ic, 4017 counter and so other. there are no fact behind them . 7400- nand 7402 -nor 7404-not 7408-and 7432-or 7486-exor 74266-ex-nor 74147 priority encoder.
Some words ending in -ic are:TopicHecticHydrophobicAnalyticCynicDiplomaticEnergeticExoticGymnasticHorrificIdyllicMedicOrthodonticPlasticSemanticSyllabic
555 is an arbitrarily assigned part number for a general purpose programmable timer IC. The number itself has no special meaning.
Tedic? Tunic?
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7404
7404
naming of IC is done according to manufacturer's name, ic type and IC number. i think MC means motorola is manufacturer. 74 means TTL IC. It is 7408 IC and H means high
99 = IC (-1+100) But today's conversion of 99 into Roman numerals is XCIX However, the Romans themselves would have probably wrote out the number 99 as LXXXXVIIII which then can be simplified to IC
98123056
To find an IC number when there were two numbers mentioned, it is ideal to have everything on a spreadsheet. From there, you can search the specific number or relation of numbers.