Tag: computer in accounting

Analog computer works on the supply of Continuous electrical pulses.

An analog computers, works by measuring voltages and currents rather than by the process of counting. An analog computers works on supply of continuous electrical signals and display outputs continuously. Side rule is an example analog device in which numbered as expressed as distances.

A computer that operates with numbers represented by directly measurable quantities (such as voltages or rotations) — compare digital computer, hybrid computer. This contrasts with an analog signal, which represents continuous values; at any given time it represents a real number within a continuous range of values.

A digital computer did not score over an analog computer in terms of Accuracy.

The definition of a digital computer is the most commonly used type of computer and is used to process information with quantities using digits, usually using the binary number system. An example of a digital computer is a MacBook.

Digital computers are programmable machines that use electronic technology to generate, store and process data. This computer fills the space between the mainframe and microcomputer This may also be called a mid-range computer.

The basic difference between analog and digital computers is the type of data they process. ... Digital computer process data which is binary, i.e. in the form of 0 and 1. Analog computers operate on mathematical variables in the form of physical quantities that are continuously varying.

Digital devices are Digital Clock.

All data that a computer processes must be encoded digitally, as a series of zeroes and ones. The opposite of digital is analog. A typical analog device is a clock in which the hands move continuously around the face. ... Most analog events, however, can be simulated digitally.

Digital clocks typically use the 50 or 60 hertz oscillation of AC power or a 32,768 hertz crystal oscillator as in a quartz clock to keep time. Some timepieces, such as many digital watches, can be switched between 12-hour and 24-hour modes.

The earliest patent for a digital alarm clock was registered by D.E Protzmann and others on October 23, 1956, in the United States. Protzmann and his associates also patented another digital clock in 1970, which was said to use a minimal amount of moving parts.

The device used to carry digital data an analog lines is called as Modulator.

An analog-to-digital converter, or ADC as it is more commonly called, is a device that converts analog signals into digital signals. ... One example is a modem which turns signals from digital to analog before transmitting those signals over communication lines such as telephone lines that carry only analog signals.

A modulator is a device that performs modulation. A demodulator (sometimes detector or demod) is a device that performs demodulation, the inverse of modulation. A modem (from modulator–demodulator) can perform both operations.

This process of imposing an input signal onto a carrier wave is called modulation. ... This is called amplitude modulation or AM. Frequency of an input signal can also be changed. If this input signal is added to the pure carrier wave, it will thereby change the frequency of the carrier wave.

A high quality CAD system uses the Digital plotter for printing drawing and graphs.

A digital plotter is a computer output device which draws curves and other computer graphics data on ordinary 8-1/2 × 11 inch (21.6 × 27.9 cm) paper. See Fig. 2-24.

Data from the computer is translated into signals which cause tiny incremental movements of the plotter's pen. The pen on the plotter (a felt-tip ink pen) is moved by a combination of X and Y carriage motions. The pen can move in eight different directions. These eight directions are used to simulate all the movements necessary to create curves. Since the incremental movement of the plotter is small (0.005 inch or 127μm) proper selection of directional moves combine into what the eye perceives as a smooth curve or line.

The plotter is a computer printer for printing vector graphics. In the past, plotters were used in applications such as computer-aided design, though they have generally been replaced with wide-format conventional printers. A plotter gives a hard copy of the output. It draws pictures on a paper using a pen.

Computer scientists are exploring the possibility of culturing bacteria to create living chips which have digital electronic properties. these chips called Biochips.

A biochip is a collection of miniaturized test sites (microarrays) arranged on a solid substrate that permits many tests to be performed at the same time in order to achieve higher throughput and speed. Typically, a biochip's surface area is no larger than a fingernail. Like a computer chip that can perform millions of mathematical operations in one second, a biochip can perform thousands of biological reactions, such as decoding genes, in a few seconds.

A biochip is a miniaturized laboratory capable of performing thousands of simultaneous biochemical reactions. It is a collection of micro-test sites or microarrays which are arranged on the surface of a solid substrate and it is meant to perform multiple tests at the same time to achieve greater speed and throughput.

A biochip is much like a computer chip but instead of performing a multitude of mathematical operations per second, it performs biological reactions such as decoding genes and finding contaminations in a few seconds.

A modern digital computer has Extremely high speed, Large memory and Almost unlimited accuracy.

In computer science, a digital electronic computer is a computer machine which is both an electronic computer and a digital computer. Examples of a digital electronic computers include the IBM PC, the Apple Macintosh as well as modern smartphones.

The ALU performs the arithmetic and logic algorithms selected to process the incoming data at extremely high speeds—in many cases in nanoseconds (billionths of a second). The main memory, control unit, and ALU together make up the central processing unit (CPU) of most digital computer systems, while the input-output devices and auxiliary storage units constitute peripheral equipment.

Main memory is directly or indirectly connected to the central processing unit via a memory bus. ... Hence, non-volatile primary storage containing a small startup program (BIOS) is used to bootstrap the computer, that is, to read a larger program from non-volatile secondary storage to RAM and start to execute it.

IBM 7000 digital computer Has modular constructions.

Examples of modular systems are cars, computers, process systems, solar panels and wind turbines, elevators and modular buildings. ... Modular design is an attempt to combine the advantages of standardization (high volume normally equals low manufacturing costs) with those of customization.

A modular PC is a computer that has individually-housed components, which are interconnected but separately removable for service or upgrading. ... The Xi3 Piston is an extremely compact and power-efficient gaming computer.

The IBM 700/7000 series is a series of large-scale (mainframe) computer systems that were made by IBM through the 1950s and early 1960s. The series includes several different, incompatible processor architectures. The 700s use vacuum tube logic and were made obsolete by the introduction of the transistorized 7000s. The 7000s, in turn, were eventually replaced by System/360, which was announced in 1964.

IBM 7000 digital computer Has modular construction.

The IBM 700/7000 series is a series of large-scale (mainframe) computer systems that were made by IBM through the 1950s and early 1960s. The series includes several different, incompatible processor architectures. The 700s use vacuum tube logic and were made obsolete by the introduction of the transistorized 7000s. The 7000s, in turn, were eventually replaced by System/360, which was announced in 1964. However the 360/65, the first 360 powerful enough to replace 7000s, did not become available until November 1965. Early problems with OS/360 and the high cost of converting software kept many 7000s in service for years afterward.

The earliest device that qualifies as a digital computer is Abacus

The history of computing hardware covers the developments from early simple devices to aid calculation to modern day computers. Before the 20th century, most calculations were done by humans. Early mechanical tools to help humans with digital calculations, such as the abacus, were called "calculating machines", called by proprietary names, or referred to as calculators. The machine operator was called the computer.