Sushovan Pal

  Central Processing Unit (CPU) Every computer is made of hardware and software. The mechanical parts of a computer are called hardware. And the organized collection of data and instructions in the computer is called software. FUNCTIONAL UNITS OF COMPUTER Different hardware units of a computer help it perform specific functions. Let us take up the functions of the computer system one by one. ➤ Input The process of entering data, instructions and programs into the computer system is called input. Some common input devices are keyboard, mouse, microphone, joystick, light pen, etc. The input is processed by the computer in a systematic manner. ➤ Storage Since the computer processes the data provided by us at a very high speed, it is necessary that we provide the data to it at the same speed. For this purpose, the data is stored in the system at a particular allotted space for faster access and processing. ➤ Arithmetic and Logical Processing The instructions (given...

                                                         Hard Times Read the story. Until I came to be owned by Nicholas Skinner, I never knew the utter misery of a cab horse's life. Skinner had a low set of cabs and drivers. He was hard on the men, who were hard on the horses. Here, we had no Sunday rest, and this was the heat of summer. On some Sunday mornings, a party of fast men would hire the cab for the day - four of them inside and another with the driver. I had to take them ten or fifteen miles out into the country, and back again. None of them ever got down to walk up a hill, however steep it was, or however hot the day was, unless the driver was afraid I should not manage it. Sometimes I was so exhausted that I could hardly touch my food. How I longed then for the bran mash with nitre that Jerry used t...

  B. Fill in the blanks with a, an or the. I want an apple from that basket. Reason: "Apple" starts with a vowel sound, so we use "an". The school on the corner is progressive. Reason: "The" is used to specify a particular school. I borrowed a pencil from your pile of pencils and pens. Reason: "Pencil" starts with a consonant sound, so we use "a". One of the students said, 'The professor is late today.' Reason: "The" is used to refer to a specific student and professor. I bought an umbrella to go out in the rain. Reason: "Umbrella" starts with a vowel sound, so we use "an". "The" is used to refer to a specific rain. My daughter is learning to play the violin at her school. Reason: "The" is used to refer to a specific instrument, the violin. Please give me the cake that is on the counter. Reason: "The" is used to refer to a specific cake and c...

  Team Work Complete the following sentences. 1. If nobody passes the ball in a basketball game, then you can’t _______________. 2. In a relay race, if no one passes the baton, then _____________. Solution: 1. If nobody passes the ball in a basketball game, then you can’t  shoot. 2. In a relay race, if no one passes the baton,  then the relay race can’t go on. 2. Name the team members needed for the following. (i) To play cricket we need Batsmen, bowlers, fielders, coaches (ii) To make a film we need ______________________________________________ (iii) To run a good school we need ______________________________________________ (iv) To run a restaurant we need ______________________________________________ Solution: (i) To play cricket we need batsmen, bowlers, fielders, coaches. (ii) To make a film we need a producer, a director, actors, and a cameraman. (iii) To run a good school we need a principal, teachers, students, and peons. ...