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Computers Articles
Page 95 of 100
Unsigned binary integers
Unsigned binary integers are numbers without any ‘+’or ‘-’ sign. Here all bits representing the number will represent the magnitude part of the number only. No bits will remain reserved for sign bit representation. An unsigned binary integer is a fixed-point system with no fractional digits.Some real life Examples are −Number of tables in a class, The number of a member of a family.Obviously, they are unsigned integers like 10 and 5. These numbers have to be represented in a computer using only binary notation or using bits.Numbers are represented in a computer using a fixed size, like 4, 8, ...
Read MoreSign Magnitude notation
The sign-magnitude binary format is the simplest conceptual format. In this method of representing signed numbers, the most significant digit (MSD) takes on extra meaning.If the MSD is a 0, we can evaluate the number just as we would any normal unsigned integer. And also we shall treat the number as a positive one.If the MSD is a 1, this indicates that the number is negative.The other bits indicate the magnitude (absolute value) of the number. Some of the signed decimal numbers and their equivalent in SM notation follows assuming a word size of 4 bits.Signed decimalsign-magnitude +6 0110 ...
Read MoreWhat are the Computer science engineering government jobs?
There are many openings for CSE and IT engineering graduates in the Indian Government sector. Here is the list of Major IT Organizations in Government of India which have openings every year for fresh engineering graduates.Centre for Development of Advanced Computing (CDAC), ONGC(Oil and Natural Gas Corporation)GAIL(Gas Authority India Ltd )National Informatics Centre (NIC)HAL (Hindustan Aeronautics LimitedEducation and Research Network (ERNET India)Software Technology Parks of India (STPI)SAIL(Steel Authority of India)DRDO (Defence Research and Development Organization)MECON limitedBARC - Bhabha Atomic Research Centre ( BARC )MECL - Mineral Exploration Corporation LimitedECIL - Electronics Corporation of India LimitedFCI - Food Corporation of IndiaCDAC ...
Read MoreWhat are the differences between Unix and Linux Operating System?
UNIX copyrighted Operating system which is used by IBM AIX, Sun Solaris and HP-UX etc., Most of the UNIX systems are commercial in nature.Linux is considered as UNIX clone. But the traditional companies won't accept "Unix-like" but want the Unix trademark. Linux Is Just a Kernel and not the complete Operating system.When it comes to administration, Linux is considered as most user-friendly operating systems. Unix and Linux use a different set of tools for back up of data. However, they both share some common tools such as tar, dump/restore, and cpio etc.
Read MoreProgramming 8051 using Keil Software
In this section we will see how to write and execute programs for 8051 microcontroller using the Keil Software.Download KeilHere is the download link of Keil. You can download it and install it very easily. We are using C51 version for 8051 devices.https://www.keil.com/download/product/Use Keil to write programs for 8051 MicrocontrollerStart the Keil software. Go to the Project > New Project then choose a location to store your program, and give a name and Save.Now in the next window select the device from different manufacturers. We are selecting Microchip, and then by expanding we are selecting AT89C51 device and click ok.Now ...
Read MoreComputer languages
There are mainly three different languages with the help of which we can develop computer programs. And they areMachine Level languageAssembly Level Language andHigh-Level LanguageMachine Level LanguageThe computer can understand only the language of Digital Electronics. Digital Electronics deals with the presence and absence of voltages. Within the computer there are two logics can play their role. These logics are −Positive Logic − Here presence of voltage will be denoted by 1 and absence of voltage will be denoted by 0Negative Logic − Here presence of voltage will be denoted by 0 and absence of voltage will be denoted by ...
Read MoreMachine language program
Computer can understand only the language of Digital Electronics. Digital Electronics deals with presence and absence of voltages. Within the computer there are two logics can play their role. These logics are −Positive Logic − Here presence of voltage will be denoted by 1 and absence of voltage will be denoted by 0Negative Logic −Here presence of voltage will be denoted by 0 and absence of voltage will be denoted by 1But obviously computer can follow anyone of the logics at a time, not both the logics simultaneously. To make the computer understand, a program can be written using only ...
Read MoreHigh-level language program
High level language is the next development in the evolution of computer languages. Examples of some high-level languages are given belowPROLOG (for “PROgramming LOGic”)FORTRAN (for ‘FORrmula TRANslation’)LISP (for “LISt Processing”)Pascal (named after the French scientist Blaise Pascal).High-level languages are like English-like language, with less words also known as keywords and fewer ambiguities. Each high level language will have its own syntax and keywords. The meaning of the word syntax is grammar.Now let us discuss about the disadvantages of high-level languagesA high level language program can’t get executed directly. It requires some translator to get it translated to machine language. There ...
Read MoreWho are currently the best programmers in the world?
Programming or software coding is not an easy task. Dennis MacAlistair Ritchie was an American computer scientist who is credited with being the all-time best programmer for his pioneering work towards shaping the digital era. He is the creator of the most used C programming language and UNIX Operating system.Let’s see who is currently reigning in the world as best computer programmers for the year 2017-2018.Bill Gates (Microsoft co-founder)James Gosling (Java Creator)Richard Stallman (GNU Project Creator)Bjarne Stroustrup (C++ Creator)Tim Berners-Lee (HTML and WWW inventor)Ken Thompson (UNIX Co-Creator)Linus Torvalds (Linux Kernel Creator)Dennis Ritchie (C Programming language creator)Jack Dorsey (Twitter Creator)Ruchi Sanghvi ...
Read MoreMicroprocessor Basics
The processor on a single chip is called a Microprocessor which can process micro-instructions. Instructions in the form of 0s and 1s are called micro-instructions. The microprocessor is the CPU part of a microcomputer, and it is also available as a single integrated circuit. Thus as main components, the microprocessor will have the Control Unit (CU) and the Arithmetic Logic Unit (ALU) of a microcomputer. An example is Intel 8085 microprocessor. In addition to the microprocessor features, a microcomputer will have the following additional features −ROM / PROM / EPROM / EEPROM for storing programRAM for storing data, intermediate results, ...
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