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False. As it is common knowledge, it is unnecessary for it to be documented.
Characteristics
based on vaccum tubes
they were large,slow,low capacity
Magnetic drums for primary memory
used mll
input punched cards and output printsout
expensive
get heated faster
eg. ENIAC,UNIVAC
Answer:here are some signs to look out for: Background noise. As with mobile devices, background noise whilst on a call is a sign that somebody else could be listening. Listen out for static, buzzing or clicks on the line.
Explanation:
