Our website is made possible by displaying online advertisements to our visitors. Please consider supporting us by whitelisting our website.

ASCII is a coding system that provides_____________?

ASCII is a coding system that provides_____________?

A. 256 different characters
B. 512 different characters
C. 1024 different characters
D. 128 different characters
A set of codes that extends the basic ASCII set. The basic ASCII set uses 7 bits for each character, giving it a total of 128 unique symbols.
ASCII coding provides 128 characters while extended ASCII coding provides 256 characters.
ASCII, abbreviation of American Standard Code For Information Interchange, a standard data-transmission code that is used by smaller and less-powerful computers to represent both textual data (letters, numbers, and punctuation marks) and noninput-device commands (control characters). Like other coding systems, it converts information into standardized digital formats that allow computers to communicate with each other and to efficiently process and store data.
The ASCII code was originally developed for teletypewriters but eventually found wide application in personal computers. The standard ASCII code uses seven-digit binary numbers; i.e., numbers consisting of various sequences of 0’s and 1’s. The code can represent 128 different characters, since there are 128 different possible combinations of seven 0’s and 1’s. The binary sequence 1010000, for example, represents an uppercase “P,” while the sequence 1110000 represents a lowercase “p.”
Digital computers use a binary code that is arranged in groups of eight rather than of seven digits, or bits. Each such eight-digit group is called a byte. Because digital computers use eight-bit bytes, the ASCII code is commonly embedded in an eight-bit field consisting of the seven information bits and a parity bit that is used for error-checking purposes or to represent special symbols. The use of an eight-bit system increased the number of characters the code could represent to 256. The eight-bit system, which is known as the extended ASCII code, was introduced in 1981 by the International Business Machines Corporation (IBM) for use with its first model of personal computer. This extended ASCII code soon became the industry-wide standard for personal computers.

ASCII is a coding system that provides_____________? Read More »

Computer Mcqs

A person who used his or her expertise to gain access to other people’s computers to get information illegally or do damage is a____________?

A person who used his or her expertise to gain access to other people’s computers to get information illegally or do damage is a____________?

A. Hacker
B. spammer
C. instant messenger
D. programmer

A person who used his or her expertise to gain access to other people’s computers to get information illegally or do damage is a____________? Read More »

Computer Mcqs

The most common type of storage devices are_________?

The most common type of storage devices are_________?

A. magnetic storage
B. Flash memory
C. optical
D. Both A & B
A storage device is any hardware capable of holding information either temporarily or permanently. The most common type of storage devices are Both Magnetic storage & Flash memory.
Magnetic storage devices:
Today, magnetic storage is one of the most common types of storage used with computers. This technology found mostly on extremely large HDDs or hybrid hard drives.
here are some examples of some Magnetic storage devices

  • Floppy diskette
  • Hard drive
  • Magnetic strip
  • SuperDisk
  • Tape cassette
  • Zip diskette

Optical storage devices:
Another common storage was optical storage, which uses lasers and lights as its method of reading and writing data. it was most common but it has been replaced by Flash Memory. flash memory is very fast in speed, reliable and cheaper.

  • Blu-ray disc
  • CD-ROM disc
  • CD-R and CD-RW disc.
  • DVD-R, DVD+R, DVD-RW, and DVD+RW disc.

Flash memory:
Flash memory has replaced most magnetic and optical media as it becomes cheaper because it is the more efficient and reliable solution. before Flash Memory the optical storage was most common but now Flash Memory has replaced it and its currently most used storage devices.

  • USB flash drive, jump drive, or thumb drive.
  • CF (CompactFlash)
  • M.2
  • Memory card
  • MMC
  • NVMe
  • SDHC Card
  • SmartMedia Card
  • Sony Memory Stick
  • SD card
  • SSD
  • xD-Picture Card

The most common type of storage devices are_________? Read More »

Computer Mcqs