what's the difference between pass by reference and pass by value?
This picture develops a clear understanding.
Characteristics (features) of computer:
1. Speed: The data processing speed of the electronic computer is very fast because the signals can pass at the speed of electricity which is near to that of the speed of light.
2. Accuracy: The accuracy of a computer is consistently high, and every calculation is performed with the same accuracy i.e. almost 100% accurate results are always the same as per design. The degree of accuracy depends on the computer design.
3. Diligence: The computer can...
Advantages and Disadvantages of Computer
The computer is faster than a human being
It is always accurate and reliable
It is versatile (It can be used in many different fields and can master in all types of works)
It can be used for communication among many people using computer
It doesn’t ever feel exhausted, tired and bored a human, so it can be used for repeated jobs
It can permanently store a massive amount of data. So the data can be used at a later date and modify the data at a...
Applications of computer system
Generations of Computer
1st Generation of computer (1945-1956 AD)
The technology used: Vacuum tube
Operating Speed was in terms of millisecond range
Primary memory used: Magnetic core memory
Secondary memory used: Electrostatic tubes, paper tapes, Punched cards, magnetic tape
Machine level language was used to instruct the computer. Programming at the hardware level
A punched card, printing devices were used as input/output operations and store the data
It occupied a large space
On the basis of size computers are divided into following types:
Mobile computing is a generic term describing one's ability to use technology while moving, as opposed to portable which is only practical for use while deployed in a stationary configuration. A mobile computing device is created using mobile components.
The applications of mobile computing are as follows:
The components of computer system with their functions are as follows:
The functions of microprocessors are as follows:
The characteristics of microporcessors are:
A microprocessor is a computer processor where the data processing logic and control is included on a single integrated circuit, or a small number of integrated circuits. The microprocessor contains the arithmetic, logic, and control circuitry required to perform the functions of a computer's central processing unit.
The types of microprocessors are as follows:
1. Arithmetic Logic Unit (ALU):The component that performs the arithmetic and logical operationsis known as the Arithmetic Logic...
ROM is further classified into four types-
The differences between RAM and ROM are as follows:
|1.RAM stands for random access memory.||1.ROM stands for read-only memory.|
|2.It allows both read and write operations.||2.It allows only to read operation.|
|3.It is volatile in nature.||3.It is non-volatile in nature.|
|4.It is used when an IO operation is performed, known as buffering.||4.It is not used for buffering purposes.|
|5.It is usually has a higher...|
The types of secondary storage devices are as follow:
Magnetic Memory : Magnetic storage is the manipulation of magnetic fields on a medium in order to record audio, video or other data. Magnetic storage has been around in many forms since 1888 by Oberlan Smith, who publicized his audio recording on a wire in Electrical World.Magnetic storage or magnetic recording is the storage of data on a magnetized medium. Magnetic storage uses different patterns of...
The various input and output devices are as follows:
A hardware interface specifies the plugs, sockets, cables and electrical signals that pass through eash line between the CPU and a peripheral device or communications networks.
The types of hardware interfaces are as follows:
Parallel port:A parallel port allows lines to be connected that will enable 8 bits to be transmitted simultaneously. They are used principally for faster speed devices such as connecting printers.
Serial port:A serial port, or RS-232 port, enables a line...