Computer Science Content

lesson plans

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1.A/an ...................................... is a person who takes a risk to produce goods and services in search of profit. a. Entrepreneur    b. Employee    c. Police man/woman    d. Bureaucrat 2.Which of the following is not a kind of sentence? a. Assertive    b. Interrogative    c. Empirical    d. Exclamatory 3.Biotic factors include all the ...................................... . a. Non-living things    b. Living things    c. Both living and non-living things    d. Natural resources 4.Examples of a biotic factors are ...................................... . a. All the waterbodies    b. All the landforms    c. Water, soil, air, light    d. All the human-made things 5.People with self-confidence have a .......................................

Unit - 3  Q1. What are the three main components of a CPU? Ans.  Three main components of a CPU are:  a. Arithmetic and Logical Unit ( ALU)  b. Control Unit (CU)  c. Memory Unit (MU)  2. Define Register. Ans. A register is a very small data holding place in a computer processor. It holds an instruction, storage address or data.  3. Name two types of primary memory. Ans. Two types of primary memory are: RAM (Random Access Memory) and ROM (Read Only Memory).  4. Which unit is used to measure the speed of a CPU? Ans. CPU speed is measured in Megahertz(MHZ).  5. What is DOS? Ans. Disk Operating System (DOS) is a type of system software that runs from a hard disk drive. It is a command line operating system.  6.Define Desktop. Ans.  The desktop is the primary user interface of a computer. It includes the desktop background (or wallpaper) and icons of files and folders you may have saved to the desktop.  7. What is Social Media? Ans....

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                           Chapter - 1 Number System   A computer can understand only a few symbols called digits and symbols. Computers use these number systems to store, represent, and perform computations on data. The most common number systems used in computers are:   Binary number system : Binary Number system consists of two digits 0s and 1s. Its base is 2. 0 means the transistor or switch is in OFF state and 1 means it is in ON state. Octal number system : Octal number system that uses digits 0 to 7. Hence, the base of octal number system is 8. Octal Number System is used as shorthand representation of long binary digits.   Decimal number system :  Decimal number system that uses digits 0 to 9. Hence, the base of decimal number system is 10.   Hexadecimal number system: Octal number system that uses digits 0 to 9 and A to F. Hence, the base of octal num...

                                             Fundamentals of Computer   Q1. What is computer? Ans. Computer is an electronic machine that can store and process the data.   Q2. What is data? Ans. Collection of words, numbers, characters and facts is called data.   Q3. What is Information? Ans. meaningful data or summary of data is called Information.   Q4. What is an instruction? Ans. Step by step procedure of operations in computer is called an instruction.   Q5.   What is a program? Ans. A set of instructions is called a program.   Q6. Explain the types of components in computer? Ans.   A computer has two type of components – Hardware and Software. Hardware – The computer components that are ph...