Tag: computer in accounting

All are included in removable media except the following High disk drive.

Removable media is any type of storage device that can be removed from a computer while the system is running. Examples of removable media include CDs, DVDs and Blu-Ray disks, as well as diskettes and USB drives. Removable media makes it easy for a user to move data from one computer to another.

Disk usage (DU) refers to the portion or percentage of computer storage that is currently in use. It contrasts with disk space or capacity, which is the total amount of space that a given disk is capable of storing. Disk usage is often measured in kilobytes (KB), megabytes (MB), gigabytes (GB) and/or terabytes (TB).

An external hard drive is a portable storage device that can be attached to a computer through a USB or FireWire connection, or wirelessly. External hard drives typically have high storage capacities and are often used to back up computers or serve as a network drive.

Asynchronous Transfer Mode header is 5 byte. A telecommunications concept defined by ANSI standards for carriage of a complete range of user traffic, including voice, data, and video signals. Asynchronous Transfer Mode (ATM) in a nutshell, is a switching and multiplexing transmission protocol. It uses a variation of packet switching, that utilizes small and fixed packet sizes, called cells.

A mobile phone that, apart from making calls, has a camera, surfs the net, sends e-mails, play digital music has calendar and many more features is the smart-phone. These smart-phones use Symbian operating system platforms and Windows smart-phone.

A smartphone is a handheld personal computer. It possesses extensive computing capabilities, including high-speed access to the Internet using both Wi-Fi and mobile broadband.

Symbian OS is an operating system designed for smartphones. The operating system enables multitasking and increased memory protection. The Symbian OS is designed for the specific requirements of 2.5G and 3G mobile phones.

In a 4 bit weighted register D/A converter, the register value corresponding to LSB is 32KΩ the register value corresponding to MSB will be 4Ω.

In the weighted resistor type DAC, each digital level is converted into an equivalent analog voltage or current.

DAC converter produces an output current of voltage proportional to digital quantity to its output. In the circuit op-amp is used as current to voltage converter.

Signals can easily be stored and transmitted in digital form; a DAC is used for the signal to be recognized by human senses or non-digital systems.

Intel has disclosed its silicon technology for high definition, large screen TVs. The new technology, code named cayley is based on liquid crystal on silicon (LCOS).

Liquid crystal on silicon is a micro display technology in which liquid crystals are fabricated on a silicon device that contains control electronics. These devices compete with digital light processing (DLP) technology in the projector and pico projector markets. Viewfinders in camera products are another key application area.

An important application of cryptography, used in computerized commercial and financial transaction is Digital signature.

Digital signature:-

A digital signature is a mathematical scheme for presenting the authenticity of digital messages or documents. A valid digital signature gives a recipient reason to believe that the message was created by a known sender, that the sender cannot deny having sent the message, and that the message was not altered in transit.

Cryptography:-

Cryptography is most often associated with scrambling plaintext (ordinary text, sometimes referred to as clear text) into cipher text (a process called encryption), then back again (known as decryption). 

Cryptography involves creating written or generated codes that allow information to be kept secret. Cryptography converts data into a format that is unreadable for an unauthorized user, allowing it to be transmitted without unauthorized entities decoding it back into a readable format, thus compromising the data.

Advantage of CMOS technology over a MOS is greater speed.

Complementary metal–oxide–semiconductor (CMOS) is a technology for constructing integrated circuit. CMOS technology is used in microprocessors, microcontrollers, static RAM, and other digital logic circuits. 

The CMOS(complementary metal oxide semiconductor) technology is top in quality. Especially, when it comes to its features like low-static power utilization and noise resistance, CMOS technology conserves energy and it does not produce heat.

DCR is not changeable instruction.

DCR means Dynamic Contrast Ratio. Contrast ratio is the difference between light and dark on a screen, expressed by a number. If we take the brightest white on a screen, and the darkest black and compare the luminosity, we get the contrast ratio.

Design change request, also Document Change Request and Database Change Request.

Focus on manual records is not necessary for computerisation system in a bank.

Manual record keeping systems is keep invoicing, payment and other business transaction records electronically or manually. The principles are the same for each but keeping records electronically will make some important tasks easier.

IEEE 802-3 is Analog based non deterministic.

IEEE 802.3 is a working group and a collection of institute of electrical and electronic engineers (IEEE) standards produced by the working group defining the physical layer and data link layer’s media access control (MAC) of wired Ethernet. This is generally a local area network (LAN) technology with some wide area network (WAN) applications.