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Watch the video and answer the question.
Which device used gears, dials and a series of rotating numbered wheels?
LAB ACTIVITY Subject Enrichment
Visit your computer lab and perform the following actions:
▶ Open Word 2010 and type the given paragraph.
MARK-I (The First Electro-Mechanical Powered Computer)
In 1944, Prof. Howard Aikens built the first electro-mechanical computer named
Mark-I. It used punched cards and a typewriter for input and output. Mark-I was
much more reliable than early electronic computers.
ENIAC—The First Electronic Computer
Electronic Numerical Integrator And Computer, was the first electronic general
purpose digital computer built in 1946 by John Mauchly and Presper Eckert. It
contained over 18,000 vacuum tubes and was 1000 times faster than Mark-I. ENIAC
consumed almost 200 kW of power.
Critical Thinking
FUN ACTIVITY
Find any four words related to the chapter in the grid.
Q E Y U O B H D Q O P M
V A C U U M T U B E S A
C B N Q T L J H Z V V B
Q R O B V C X Z Q L A A
T G V X Q U O K J S H C
M A C I N T O S H I K U
Q F C B A Z N W T Q L S
Z T R A N S I S T O R E
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