Inventors

Question 1

built the
first working calculator

Answer 1

Wilhelm shickard

Question 2

built a mechanical calculator
which could add and subtract numbers up to
eight digits

Answer 2

Blaise pascal

Question 3

expanded Pascal’s design and built a
mechanical calculator that could also multiply
and divide.

Answer 3

Gottfried Wilhelm von leibniz

Question 4

invented
the first programmable loom in which
removable wooden punch cards were used to
represent patterns

Answer 4

Joseph Marie jacquard

Question 5

incorporated punch cards in
his Difference engine, a steam-powered
mechanical calculator for solving
mathematical equations

Answer 5

Charles Babbage

Question 6

Analytical engine

Answer 6

Charles Babbage

Question 7

provided step-by-step
instructions or subrouteines for the Analytical
engine which led the computing industry to
recognize her as the world’s first programmer

Answer 7

Augusta ada byron

Question 8

designed a machine to sort
and tabulate data for the 1890 U.S. census,
employing punch cards to encode census data

Answer 8

Herman hollerith

Question 9

constructed Mark I in 1944

Answer 9

Howard aiken

Question 10

noted the “First actual
case of bug being found

Answer 10

Grace Murray hopper

Question 11

Vacuum tubes

Answer 11

Lee de forest

Question 12

built the first electronic
computer, COLOSSUS, to decode encrypted
Nazi communications

Answer 12

Alan turing

Question 13

ENIAC

Answer 13

John mauchly and j presper eckert

Question 14

Transistors

Answer 14

John Bardeen, Walter Brattain William Shockley

Question 15

introduced the first
high-level programming language, FORTRAN

Answer 15

John backus

Question 16

invented the
integrated circuit or IC chip composed of
layers of transistors

Answer 16

Jack Kilby and Robert noyce

Question 17

noticed that the number of
transistors that could fit on a chip doubled
every 12 to 18 months.

Answer 17

Gordon moore

Question 18

C

Answer 18

Dennis Ritchie

Question 19

founded
Apple Computers and began marketing Apple
II, the first preassembled personal computer.

Answer 19

Steven jobs and Stephen Wozniak

Question 20

wrote the first
commercial software for personal computers,
an interpreter for the BASIC programming
language

Answer 20

Bill Gates and Paul allen

Question 21

developed Smalltalk, the first
object-oriented language

Answer 21

Alan kay

Question 22

developed C++, an object
oriented extension of the C language

Answer 22

Bjarne Stroustrup