Page No. 6
✒️ Exercises
1. Tick (✓) the correct answer.
a. Which of the following is the first
calculating device?
Ans : (i) Abacus ✓
b. Which of the following was the first
mechanical calculator?
Ans : (iii) Pascaline Calculator ✓
c. Who is called the father of
computer?
Ans : (iii) Charles Babbage ✓
Page No. 7
d. Where was the abacus invented?
Ans : (ii) China ✓
e. Who is known as the world's first
Lady programmer?
Ans : (i) Lady Ada Lovelace ✓
f. Who developed the Analytical
Engine?
Ans : (ii) Charles Babbage. ✓
2. State whether the following
statements are true (T) or false (F).
a. Abacus was the first calculating
device.
Ans : F
b. Napier Bones was invented by
Blaise Pascal.
Ans : F
c. Blaise Pascal invented the
Pascaline.
Ans : T
d. Sir John is called the father of
computer.
Ans : F
e. Charles Babbage invented the first
mechanical computer.
Ans : F
3. Name the inventor of the following
machines.
a. Pascaline ......................
Ans : Blaise Pascal
b. Difference Engine ......................
Ans : Charles Babbage
c. Jacquard Loom ......................
Ans : J.M. Jacquard
d. Leibniz's Calculator ......................
Ans ; Gottfried Wilhelm
e. Analytical Engine ......................
Ans : Charles Babbage.
4. Match the following correctly.
a. Ada Lovelace (i) Difference
Engine
b. Blaise Pascal (ii) First
mathematical
calculator
c. Charles Babbage (iii) First
computer
programmer
d. Gottfried Wilhelm (iv) Napier's
Bones
e. John Napier (v) Pascaline
Ans : a. ~ (iii)
b. ~ (v)
c. ~ (i)
d. ~ (ii)
e. ~ (iv)
Page No. 5
5. Write the names of the following
devices.
Abacus ; Napier's Bones ; Pascaline
Calculator ; Difference Engine ; Laptop
Computer ; Game Console
6. Answer the following questions.
a. Name the first calculating device.
Ans : Abacus.
b. Name the first mechanical
calculator. Who invented it?
Ans : Pascaline.
Blaise Pascal invented it.
c. Who invented Napier's Bones?
Ans : John Napier invented Napier's
Bones.
d. What did Blaise Pascal invent? What
was the purpose of invention?
Ans : Blaise Pascal invented first
mechanical calculator called
Pascaline.
The purpose of invention was
adding, subscracting, multiplying
and dividing big numbers.
e. Name the computer developed by
Howard H. Aiken.
Ans : Harvard Mark I
f. Name the engine developed by
Charles Babbage.
Ans : Difference Engine.
g. Who is known as the father of
Computers? Why?
Ans : Charles Babbage is known as the
father of Computers.
Because he designed the world's
first general purpose computer
called the Analytical Engine which
had four parts -- an input device, a
mill (processing unit), a storage
device and an output device.
樂 Activity Time.
Solve the following puzzle and find the answers in the word grid given.
a. Machine made by Blaise Pascal:
Ans : Pascaline.
b. First calculating device.
Ans : Abacus.
c. Modern age computer that is placed
on the desk.
Ans : Desktop Computer.
d. First most successful electronic
computer.
Ans : ENIAC.
e. Programming language, is named in
honour of the countess Ada
Lovelace.
Ans: Ada.
f. Modern age computer that is
portable in size and have touch
screen and a virtual keyboard.
Ans: Tablet.
 | Lesson 1. Evolution of Computers){kind=link}
0 Comments