Computers in Accounting Test - 16

A dumb terminal has a keyboard and screen.

"A display monitor that has no processing capabilities. yeah A dumb terminal is simply an output device that accepts data from the CPU. In contrast, a smart terminal is a monitor that has its own processor for special features, such as bold and blinking characters.

Grater than,Less than and Equal to are the three decisions making operations performed by the ALU of a computer.

The greater-than sign is a mathematical symbol that denotes an inequality between two values. Since the development of computer programming languages, the greater-than sign and the less-than sign have been repurposed for a range of uses and operations.

Greater than and less than comparison of non-numeric data is performed according to a sort convention (such as, for text strings, lexicographical order) which may be built into the programming language and/or configurable by a programmer.

In programming languages == sign or double equal sign means we are comparing right side with left side, and this comparison returns true or false, We usually use this comparison inside if condition to do something specific.

Computer operators operate the device which input and output data from the computer.

The computer is a device that operated upon information or data. It is an electronic device which accepts inputs data, stores the data, does arithmetic and logic operations and provides the outputs in the desired format. The computer receives data, process it, produces output and stores it for further references.

How Computers Work: Input and Output. The central processing unit is the unseen part of a computer system, and users are only dimly aware of it. But users are very much aware of the input and output associated with the computer. They submit input data to the computer to get processed information, the output.

The central processing unit consists of electronic circuits that interpret and execute program instructions, as well as communicate with the input, output, and storage devices. It is the central processing unit that actually transforms data into information. Data is the raw material to be processed by a computer.

Digital vesatile disks is an example of an optical disk.

Compact disks (CD), digital versatile/video disks (DVD) and Blu-ray disks are currently the most commonly used forms of optical disks. These disks are generally used to: Distribute software to customers. Store large amounts of data such as music, images and videos.

Optical Disk Drive Defined. An optical disk drive (ODD) uses a laser light to read data from or write data to an optical disc. These include CDs, DVDs, and Blu-ray discs. This allows you to play music or watch movies using pre-recorded discs.

An optical disc is designed to support one of three recording types: read-only (e.g.: CD and CD-ROM), recordable (write-once, e.g. CD-R), or re-recordable (rewritable, e.g. CD-RW).

To The clipboard temporary area can you store text and other data, and later paste them to another location

The clipboard is a data buffer used for short-term data storage and/or data transfer between documents or applications used by cut, copy and paste operations and provided by the operating system. ... Each cut or copy overwrites the previous contents.

A clipboard is a temporary storage area for data that the user wants to copy from one place to another. In a word processor application, for example, the user might want to cut text from one part of a document and paste it in another part of the document or somewhere else.

Where as a computer mouse over the table surface, the trackball is Stationary.

A trackball is a pointing device consisting of a ball held by a socket containing sensors to detect a rotation of the ball about two axes—like an upside-down mouse with an exposed protruding ball.

A trackball is essentially a different kind of computer mouse. It is a plastic case containing a ball on the top that moves a computer cursor around on the screen. The user can move the ball with their thumb or fingers, and sensors inside the case detect which direction the ball is moving.

The main components of a digital computer are : Input devices (keyboard, mouse, etc).,Memory board.,Central Processing Unit (processor). And In computing,

an input device is a piece of computer hardware equipment used to provide data and control signals to an information processing system such as a computer or information appliance. Examples of input devices include keyboards, mouse, scanners, digital cameras and joysticks.Output devices (video terminal, printer, etc.).

In computing, an input device is a piece of computer hardware equipment used to provide data and control signals to an information processing system such as a computer or information appliance. Examples of input devices include keyboards, mouse, scanners, digital cameras and joysticks.

A central processing unit (CPU) is the electronic circuitry within a computer that carries out the instructions of a computer program by performing the basic arithmetic, logical, control and input/output (I/O) operations specified by the instructions.

DMA stand for Direct Memory Access.

Direct Memory Access (DMA) is a capability provided by some computer bus architectures that allows data to be sent directly from an attached device (such as a disk drive) to the memory on the computer's motherboard.

A device facilitates DMA transfer with a processing element (single purpose processor) and that device is called DMAC (DMA Controller). DMA based method useful, when a block of bytes are transferred, for example, from disk to the RAM or RAM to the disk. CPU acknowledges that if the system memory buses are free to use.

Direct memory access (DMA) is a means of having a peripheral device control a processor's memory bus directly. DMA permits the peripheral, such as a UART, to transfer data directly to or from memory without having each byte (or word) handled by the processor.

ABC was the first computer to perform all calculation using electronics rather than wheels, ratchets, or mechanical switches.

The Atanasoff–Berry Computer (ABC) was the first automatic electronic digital computer, an early electronic digital computing device that has remained somewhat obscure. The ABC's priority is debated among historians of computer technology, because it was neither programmable, nor Turing-complete.

Atanasoff and Berry's computer work was not widely known until it was rediscovered in the 1960s, amidst conflicting claims about the first instance of an electronic computer. At that time ENIAC, that had been created by John Mauchly and J. Presper Eckert, was considered to be the first computer in the modern sense, but in 1973 a U.S. District Court invalidated the ENIAC patent and concluded that the ENIAC inventors had derived the subject matter of the electronic digital computer from Atanasoff (see Patent dispute).

The ABC was built by Atanasoff and Berry in the basement of the physics building at Iowa State College during 1939–42. The initial funds were released in September, and the 11-tube prototype was first demonstrated in October 1939. A December demonstration prompted a grant for construction of the full-scale machine.

Cache is a portion of memory that serves as a temporary repository for data as it waits for a given action

In computing, a cache is a hardware or software component that stores data so that future requests for that data can be served faster; the data stored in a cache might be the result of an earlier computation or a copy of data stored elsewhere. A cache hit occurs when the requested data can be found in a cache, while a cache miss occurs when it cannot. Cache hits are served by reading data from the cache, which is faster than recomputing a result or reading from a slower data store; thus, the more requests that can be served from the cache, the faster the system performs.