Exploring Mathematics Chapter 12

Question 1

The expression log103 = 0.477 is read as “The logarithm of the number __________ in base __________ is __________.”

Answer 1

three, ten, 0.477

Question 2

built the difference engine

Answer 2

Charles Babbage

Question 3

built a calculator called the Step Reckoner

Answer 3

Gottfried Leibnitz

Question 4

In the early days of computers, input was mainly by 12

Answer 4

punched cards

Question 5

invented tabulating machines used in the 1890 census

Answer 5

Herman Hollerith

Question 6

invented logarithms

Answer 6

John Napier

Question 7

The number 5,280 changed to standard notation is

Answer 7

5.28 x 10³

Question 8

the letters RAM stand for

Answer 8

random access memory

Question 9

built the first general purpose calculating machine

Answer 9

Howard H. Aiken

Question 10

wrote the first computer program

Answer 10

August Ada Byron, Lady Lovelace

Question 11

Any number raised to the zero power, is

Answer 11

1

Question 12

built a calculator to help his father, a tax collector

Answer 12

Blaise Pascal

Question 13

spent six years calculating the orbit of Mars

Answer 13

Johannes Kepler

Question 14

In this list, which one is considered the “heart” of a computer: input, control program, memory, central processing unit, output?

Answer 14

central processing unit