the first computer to use vacuum tubes instead of electrical relays be 1.Mark1 or 2.UNIVAC or 3.Z3 or 4.ENIAC

the first computer to use vacuum tubes instead of electrical relays be 1.Mark1 or 2.UNIVAC or 3.Z3 or 4.ENIAC

Easy. You deliberate we don't know how to do research? Look up 'vacuum tube' in Wikipedia and you will find, if you scroll down, that the first computer to use vacuum tubes be the Colossus Mark 1.



Try something harder?
Oh dear lord, please get a existence!! Since it's multiple choice i'll go for 4. ENIAC Good luck contained by getting answers:)
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