Assignment 1
- 1. Assignment- 01 Course Title: Data Communication Course Code: CSE 313 Submitted To: Pranob Nath Bandhu Lecturer City University Khagan, Savar, Dhaka. Submitted By: Md.Rasel Kabir Raju ID: 1834902202 Batch: 49th Program: CSE Submission date:
- 2. What is Computer A computer is a machine that can be programmed to carry out sequences of arithmetic or logica operations automatically. Modern computers can perform generic sets of operations known as programs. These programs enable computers to perform a wide range of tasks. A computer system is a "complete" computer that includes the hardware, operating system (main software), and peripheral equipment needed and used for "full" operation. This term may also refer to a group of computers that are linked and function together, such as a computer network or computer cluster. The basic principle computer works Based on the instructions given, a computer receives data through an input unit and sends it back through an output system after it processes the data. The input devices of a computer are used to get the input data. Hardware:Computer hardware includes the physical parts of a computer, such as the case, central processing unit (CPU), monitor, mouse, keyboard, computer data storage, graphics card, sound card, speakers and motherboard.By contrast, software is the set of instructions that can be stored and run by hardware. Hardware is so-termed because it is "hard" or rigid with respect to changes, whereas software is "soft" because it is easy to change.Hardware is typically directed by the software to execute any command or instruction. A combination of hardware and software forms a usable computing system, although other systems exist with only hardware. Software:Software is a collection of instructions and data that tell a computer how to work. This is in contrast to hardware, from which the system is built and actually performs the work. In computer science and software engineering, software is all information processed by computer systems, including programs and data. Software includes programs, libraries and related non-executable data, such as online documentation or digital media. Software and hardware require each other and neither can be realistically used on their own.At the lowest programming level, executable code consists of machine language instructions supported by an individual processor—typically a central processing unit (CPU) or a graphics processing unit (GPU). Machine language consists of groups of binary values signifying processor instructions that change the state of the computer from its preceding state. For example, an instruction may change the value stored in a particular storage location in the computer—an effect that is not directly observable to the user. An instruction may also invoke one of many input or output operations, for example displaying some text on a computer screen; causing state changes which should be visible to the user. The processor executes the instructions in the order they are provided, unless it is instructed to "jump" to a different instruction, or is interrupted by the operating system. As of 2015, most personal
- 3. computers, smartphone devices and servers have processors with multiple execution units or multiple processors performing computation together, and computing has become a much more concurrent activity than in the past. A Motherboard:A motherboard (also called mainboard, main circuit board, or mobo) is the main printed circuit board (PCB) in general-purpose computers and other expandable CPU:A central processing unit (CPU), also called a central processor, main processor or just processor, is the electronic circuitry that executes instructions comprising a computer program. The CPU performs basic arithmetic, logic, controlling, and input/output (I/O) operations specified by the instructions in the program. This contrasts with external components such as main memory and I/O circuitry, and specialized processors such as graphics processing units (GPUs). GPU:A GPU, or graphics processing unit, is a special stream processor used in computer graphics hardware. RAM:Random-access memory (RAM; /ræm/) is a form of computer memory that can be read and changed in any order, typically used to store working data and machine code.A random-access memory device allows data items to be read or written in almost the same amount of time irrespective of the physical location of data inside the memory, in contrast with other direct-access data storage media (such as hard disks, CD-RWs, DVD-RWs and the older magnetic tapes and drum memory), where the time required to read and write data items varies significantly depending on their physical locations on the recording medium, due to mechanical limitations such as media rotation speeds and arm movement. Storage: Storage is a process through which digital data is saved within a data storage device by means of computing technology. Storage is a mechanism that enables a computer to retain data, either temporarily or permanently. Storage may also be referred to as computer data storage or electronic data storage. Reference >https://www.google.com/search?q=what+is+computer&oq=what+is+c&aqs=chrome.0.69i5 9j69i57j0i67j0i20i131i263i433i512j0i131i433i512l2j69i60l2.4410j0j1&sourceid=chrome&ie =UTF-8 >https://en.wikipedia.org/wiki/Hardware