C++ Programming

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• Instructions & I/O Subsystems
• Addressing Concepts
• Logic Gates & Flip Flops
• Storage Devices
• Input Output (II Part)
• Input Output Devices (I part)

Instructions & I/O Subsystems Posted: 01 May 2013 11:00 AM PDT Q.1. What is an Instruction? Ans.: An instruction is a command given to the computer to perform a specified operation on given data. Each instruction consists of 2 parts: an opcode and an operand. The first part of an instruction, which specifies the operation, to be performed is known as opcode. The second part of an instruction called operand is the data on which computer perform the

Addressing Concepts Posted: 01 May 2013 10:27 AM PDT Q.1. Explain in detail about the concept of Addressing in the Memory. Ans.: Each instruction needs data on which it has to perform the specified operation. The data may be in the accumulator, GPR (general purpose registers) or in some specified memory location. The techniques of specifying the address of the data are known as addressing modes. The important addressing modes are as follows : (i

Logic Gates & Flip Flops Posted: 01 May 2013 10:20 AM PDT Q.1. What are Logic Gates? Ans.: A digital computer uses binary number system for its operation. In the binary system there are only 2 digits, 0 and 1. The manipulation of binary information is done by logic circuit known as logic gates. The important logical operations which are frequently performed in the design of a digital system are: (1) AND (2) OR (3) NOT (4) NAND (5) NOR and EXCLUSIVE

Storage Devices Posted: 01 May 2013 04:32 AM PDT Q.1. How can you classify Storage Devices? What are its different types elaborate? Ans.: Storage devices or secondary storage devices are used to store data and instruction permanently. They are used in computers to supplement the limited storage capacity of RAM. Floppy Disk : It‟s a circular disk coated with magnetic oxide and enclosed within square plastic cover (Jacket). It‟s available in

Input Output (II Part) Posted: 01 May 2013 04:15 AM PDT Q.5. Explain about LCD Monitors. Ans.: LCD stands for Liquid Crystal Display. Each pixel of an LCD typically consists of a layer of molecules aligned between 2 transparent electrodes, & 2 polarizing filters, the axis of transmission of which are perpendicular to each other. The surface of the electrodes that are in contact with the liquid crystal material are treated so as to align the liquid

Input Output Devices (I part) Posted: 01 May 2013 04:16 AM PDT Second Part Here :-II Part Q.1. Give short notes on various Input and Output Devices. Ans.: The devices which are used to input the data and the programs in the computer are known as "Input Devices‟. These devices convert what we input, into a form that is understandable by a computer. It provides man to machine communication. Some of the I/O devices are explained below: (1) Keyboard : The

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