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CBSE,class 7,IT computer, unit 1, computer software

CBSE, class 7, It computer, unit 2 functions and charts in calc Q.1 If we use =ROUND() formula, so what was the output. a. =Round(45.22)   Answer : 45   b. =Round(68.88) Answer : 69   Q.2 If we use =GCD() formula, so what was the output.   c. =GCD(2;4;6;8;24) Answer: 2   d. = gcd(6;12;24)   Answer: 6   Q.3 If we use =LCM() formula, so what was the output. a. =LCM(3;6;9) Answer : 18   Q.4 If we use =Date() formula, so what was the output. a. =Date(1994;5;4) Answer: 5-4-1994   Q.5 A __________ reads each statement of the source program, converts it into the machine language and then executes. Answer : Interpriter   Q.6 MS Excel is which type of application software? Answer: General Purpose   Q.7 Which one is correct example of utility software? Answer: WinZip   Q.8 Which one is correct example of Propitiatory software? Answer: Microsoft Office   Q.9 Write Correct output of given below.   1. =LEN("Podar_# School") Answer : 14   2. =upper("today is saturday") Answer : T

Cbse, class 7, IT computer, unit 1 Ch.1 Types of Software System Software  It is responsible for managing and controlling hardware resources so that other software and users can use the hardware effectively. Operating System: An Operating System (OS) is the most important and basic set of software required for a computer to function. It manages the hardware resources and provides some common services for the users. A general purpose computer must have an operating system to install and run other programs.   Some of the basic tasks of an operating system are: ·         Receiving input from input devices and send output to output devices. Š ·         keeping track of files and directories on the hard disk and other storage devices Š ·         allocating memory to various programs and files Š ·         ensuring security by specifying user access rights ·         Some examples of operating systems are DOS, UNIX, Windows, LINUX, Ubuntu and Mac OS X.     Language Processors: The instructions

CBSE, class 7, IT computer, unit image editing in gimp   

Cbse, class 7, IT COMPUTER, united 1types of software   2. How is an interpreter different from a compiler?   S.No. Compiler Interpreter 1. The compiler scans the whole program in one go. Translates the program one statement at a time. 2. As it scans the code in one go, the errors (if any) are shown at the end together. Considering it scans code one line at a time, errors are shown line by line. 3. The main advantage of compilers is its execution time. Due to interpreters being slow in executing the object code, it is preferred less.   3. List and explain the function of any four utility software. ·         Antivirus utilities scan files for computer viruses and remove them. ·         Backup utilities are used to make a copy of all the information stored on a disk so that it can be restored in case of a disk failure. ·         Data compression utilities are used to compress files into a smaller size so that they occupy less disk space. Compressed files are also easier and faster to sen

Cbse, class 7, IT COMPUTER, UNIT 1, TYPES OF SOFTWARE   Q:1. Select the correct option.   a. This software directly interacts with the hardware and allows you to communicate with it.   i.      system software ii.      application software   iii.      both (i) and (ii) iv.      none of these b. Which of the following is an example of utility software?   i. MS Excel ii. Google Chrome   iii. Windows Media Player iv. Bull guard c. It is available for free and can be modified according to our requirements.   i.      firmware ii.       open source software   iii.      both (i) and (ii) iv.      none of these d. A set of one or more programs used to accomplish a specific task but not necessary for running the computer.   i.      system software ii.      application software   iii.      both (i) and (ii) iv.      none of these e. Which of the following is not an example of utility software?   i.     Norton Antivirus ii.     Winzip   iii.    Windows Media Player iv.    Bull guard 2. Do as direc

CBSE, CLASS 7,IT, COMPUTER, UNIT 2, FUNCTIONS AND CHARTS IN CALC  Notes Mathematical Functions: ·          ROUND()  : This function rounds a number to the specified number of digits Syntax: =ROUND(number; count) Example :     = Round(35.45;0) Answer : 35 = Round(39.95;0) Answer : 40   ·          LCM(): This function finds the least common multiple of given numbers. Syntax: =LCM(Integer1;Interger 2;.......) Example :     = LCM(10,5,15) Answer : 30 = LCM(2,6,8) Answer : 24     ·          GCD()  : This function finds the greatest common divisor of given numbers. Syntax: =GCD(Integer1;Interger 2;.......) Example :     = GCD(10,5,15) Answer : 5 = GCD(2,6,8) Answer : 2   Text Functions ·          UPPER ()  : This function converts text to uppercase letters. Syntax: =UPPER (text) Example :     = UPPER(“podar”) Answer : PODAR = UPPER(“function”) Answer : FUNCTION   ·          LOWER():  This function converts text to lowercase letters. Syntax: =LOWER(text) Example : = LOWER(“PODAR”) Answer : po

CBSE, CLASS 7,IT COMPUTER,UNIT 3 TINKERCAD CIRCUITS 1. Fill in the blanks.   a.                                tests the working of the circuits and components.   Ans simulation     b.   The                            is used to assemble and connect various components of a circuit.   Ans breadboard   c. In an LED, the positive end is called the                             and the negative end is called the                            .   Ans anode, cathode     d.   A                           is used to restrict the flow of current to electrical components in a circuit..   Ans resistor     e.   To zoom in on any component in Tinkercad, we must hold the Control key and press the                           key.   Ans plus   2.   Label the following.   a. Anode and Cathode in an LED   Ans.     b. Different parts of a breadboard   Ans.     3.   Answer the following questions   a. Explain the use of the ‘Transparent’ option in Tinkercad.   Ans. The Transparent option is used to hide the visib

CBSE, CLASS 7, IT, COMPUTER, UNIT 3 - TINKERCAD CIRCUITS Notes The Opening Screen of Tinkercad Circuits §  Workspace §  Undo §  Redo §  Delete Components of a circuit 1.      Basic components:  It consists of a battery, push button, resistor, LED and capacitor. 2.      Circuit Assembly:  Circuit assemblies are simple, pre-made circuits that can be incorporated into 3D designs. 3.      Rotate:  It is used to rotate any component placed onto the workspace. 4.      Start/Stop Simulation:  Start/Stop Simulation tests the working of circuits and components. §  A  breadboard  is a piece of plastic that has several holes. These holes are used to hold different electronic components. §  A  Light Emitting Diode  (LED) is an electronic device that emits light when an electric current passes through it. §  The voltage(v) indicates the pressure from the electronic circuit power source. §  A resistor is used to restrict the flow of current to electrical components. Electrical current is measured in