CLASS - 5|| SUBJECT - COMPUTER|| LESSON - 1|| EVOLUTION OF COMPUTERS||

-

 

LESSON – 1

EVOLUTION OF COMPUTERS

 

1.  Name the first calculating device. Write a short note on early calculating devices.

Abacus was the first calculating device. With the course of time different machines were invented to perform calculations. The early calculation devices were Napier’s bones, Pascaline calculator, Difference engine and analytical Engine.

 

2.  Name the generation of computers and briefly explain each of them.

The first generation computers were very large in size, heavy, used vacuum tubes and were extremely costly.

Second generation computes used transistors. Were small in size, and cheaper.

Third generation computers used integrated circuits, replacing transistors. They had a keyboard and a monitor.

The fourth generation computes have a high storage, and are the best in all categories.

The fifth generation computing or artificial intelligences, is still under research and development. It would enable a computer to think or its own.

 

3.  What do you understand by artificial intelligence?

The artificial intelligence will be intelligent like human beings, and will use artificial intelligence for working. They will be able to think and take decisions like us. They will be sued in areas such as robotics, designing, defence, etc. Alan Turing is known as the Father of Artificial intelligence.

 

4.  Name the different types of computer.

The digital computers are broadly classified into four categories based on their size and type. They are:

a.  Microcomputers

b.  Minicomputers

c.  Mainframe computes

d.  Supercomputer.

 

5.  Write down the advantages and disadvantages of computers.

Advantages:-

i.         Speed: it is capable of performing complex calculations quickly.

ii.        Accuracy: a computer always gives the correct result to the inputs it receives.

iii.      Diligence: unlike humans, it cannot get bored of repetitive work.

iv.      Versatility: it is capable of performing different tasks.

v.        Multitasking: it can perform different tasks at the same time

vi.      High Storage: it is capable of storing large amount of data and information.

Limitations:-

i.         It operates only on a set of instructions.

ii.        It has to be instructed regarding every step to be performed.

iii.      It cannot take decisions by itself, and must have a used input.

 

Comments

Post a Comment

Popular posts from this blog

CLASS - 3|| SUBJECT - SCIENCE|| LESSON - 4|| INSECTS||

-
Image
  LESSON – 4 INSECTS   QUESTIONS & ANSWERS :-   1.   What are insects? Name some common insects found in our surroundings. Insects are small creatures that are found almost everywhere. They are different in size, colour and features. Some common insects like ants, bees, butterflies, beetles, mosquitoes, flies, honeybees and grasshoppers can be seen in our surroundings.   2.   What are the main parts of an insect’s body? Draw a labelled diagram of an insect’s body. An insect’s body is divided into three main parts – head, thorax and abdomen. 3.   What do you mean by life cycle? Draw a labelled diagram of the life cycle of a butterfly. Life cycle is the series of changes that happen to a living creature over the course of its lifetime.   4.   Name three insects which are useful to us and how? There are some insects which are very useful to us. a.   Honeybees give us honey and beeswax. Candles, soaps and cr...
Read more

CLASS - 3// SUBJECT - SCIENCE // LESSON - 5 // PLANTS- PARTS AND THEIR FUNCTIONS //

-
Image
  LESSON - 5 PLANTS- PARTS AND THEIR FUNCTIONS   1.     What are the two main parts of a plant? A plant is divided into two main parts- the shoot and the root. The part of the plant which is above the soil is called the shoot. The part of the plant which remains under the soil is called the root.   2.     What are the main functions of a root? a.      Roots fix plants firmly in the soil. b.     They help the plants to stand straight c.      They hold the soil and prevent it from being washed away by water or wind. d.     They take in water and minerals from the soil and pass them, to the stem. e.     Some roots store food.   3.     What are the main functions of leaves? Why are they called the kitchen of the plant? Leaves prepare and store food for the plant, gives out the oxygen during the process of photosynth...
Read more

CLASS 6 / GEOGRAPHY / LESSON 1 (Q/A)

-
Chapter 1 The Earth in the Solar System I.              Answer the following questions briefly. 1.      How does a planet differ from a star?   Differences between a planet and a star: PLANET STAR A planet does not have its own light and heat. It derives its light from a star A star possesses its own heat and light. A planet is usually smaller than stars. Stars are very huge objects compared to a planet in general. 2.     What is meant by the ‘Solar System’? The term Solar System refers to the “family” of the Sun. The Sun is a star around which eight planets, among other celestial objects, revolve in orbits. This whole system of bodies is called the Solar System. The Sun is the “head” of this system.   3.     Name all the planets according to their distance from the sun. The list...
Read more