1301 – 1400 Key Points

1301) The operating system, which allowed the device to run many different applications at one time with a central program that monitored the memory was introduced in third generation computers
1302) In third generation computers, users interacted through keyboards and monitors
1303) The fourth generation computers saw the development of GUIs, the mouse and handheld devices
1304) First computers that stored instructions in memory are second generation computers
1305) In second generation computers transistors replaced vacuum tubes
1306) The micro processor was introduced in fourth generation computer
1307) Integrated Circuits (IC) are introduced and the replacement of transistors started in third generation computers
1308) Fifth generation computing is based on artificial intelligence
1309) Assembly language is low-level language
1310) In assembly language mnemonics are used to code operations, alphanumeric symbols are used for address,language lies between high-level language and machine language
1311) The computer’s secondary memory is characterized by low cost per bit stored
 1312) Acknowledgement from a computer that a packet of data has been received and verified is known as ACK
1313) Acoustic coupler is a communications device which allows an ordinary telephone to be used with a computer device for data transmission
1314) ALGOL is a high-level language
1315) A high level programming language named after Ada Augusta, coworker with Charles Babbage is Ada
1316) Adder is a logic circuit capable of forming the sum of two or more quantities
 1317) To identify particular location in storage area one have a address
 1317) To identify particular location in storage area one have a address
1318) A local storage register in the CPU which contains the address of the next instruction to be executed is referred as address register
1319) A sequence of precise and unambiguous instructions for solving a problem in a finite number of operations is referred as algorithm
1320) PC/AT is an example of Bi-directional keyboard interface
1321) DIMM is not an I/O bus
1322) PCI bus is often called as mezzanine bus
1323) 8088 is an original IBM PC inter CPU chip
1324) 80386 is a 32-bit processor
1325) A Pentium or Pentium pro board should run at 60 or 66 MHZ
1326) The maximum bandwidth of EISA bus is 33 M/sec
1327) A computer system runs millions of cycles per second so that speed is measured in MHz
1328) Heat sink is the metal device that draws heat away from an electronic device
 1329) Pentium chip has 64 bit & 32 bit registers
1330) A mother board should contain at least 4 memory sockets
1331) The 1.2 MB drive spin at 360 rpm
1332) Intensity of sound is called amplitude
1333) A single zero bit is called starting bit
1334) PnP stands for plug and play
1335) A computers system’s clock speed is measured as frequency
1336) Maximum RAM of XT type is 1 M
1337) The data in 8 bit bus is sent along 8 wires simultaneously in parallel
1338) The bus is simple series of connection that carry common signals
1339) Mainly memories are divided into two types they are logical memories and physical memories
1340) System based on the new Pentium II processor have the extended memory limit of 4G
1341)  Full form of EMS memory is excluded memory specification
1342)  The 286 & 386 CPU have 24 address lines
1343)  Bus has both the common meaning and computer meaning
1344)  Data on a floppy disk is recorded in rings called tracks
1345)  A group of characters that have a predefined meaning database
1346) In a spreadsheet a cell is defined as the intersection of a row and column
1347) Document file is created by word processing programs
1348) Real time is not a type of error
1349) The mouse device drivers, if loaded in the config.sys file, its typically called mouse.sys
1350) Peer to peer means computer to computer
1351) RLL refers to run length limits
1352) The most important aspect of job scheduling is the ability to multiprogramming
1353) Modem is a modulator-demodulator system
1354) A data communication system requires terminal device, communication channel, protocols
1355) The start button appears at the lower left of the screen
1356) Windows is GUI
1357) TIF stands for tagged image format
1358) The first network that initiated the internet is ARPANET
1359) In modems a digital signal changes some characteristic of a carrier wave
1360) Favorites are accessible from the start menu
1361) The virus is a software program
1362) BANK’S is not memory chip
1363) We use RAM code to operate EGA
1364) A scanner is attached to LPT or SCSI host adapter port
1365) RAM bus is not a bus
1366) Processor bus is the fastest speed bus in system
1367) Resolution is the amount of detail that a monitor can render
1368) Sound blaster is a family of sound cards sold by creative labs
1369) MIDI is a family of sound cards sold by creative labs
1370) MIDI is a standard for connecting musical instruments to PC’s
1371) By connecting a MIDI cable to the joystick port you can connect your PC to a MIDI device
1372) MPC stands for multimedia personal computer
1373) Video cards, video and graphics card are example of video & audio
1374) The display technology used by monitor is CRT
1375) On a LAN each personal computer is called workstations
1376) The CPU is the next most important file server after the hard disk
1377) It is best to use the game adaptor interface on the sound card and disable any other on system
1378) Mouse port uses keyboard controller
1379) The number of sectors per track in 1.44 MB floppy disk is 18
1380) Pentium II system can address 62 G memory
1381) The mouse was invented by Englebart
1382) The server’s network adapter card is its link to all the work stations on LAN
1383) Magnetic drives such as floppy and hard disk drives operate by electro magnetism
1384)  Clock timing is used to determine that start and end of each bit cell
1385)  Head designs are of 4 types
1386)  Latency is the average time that it takes for a sector to be a available after the heads
1387)  Each sector is having 512 bytes
1388)  DDD means digital diagnostic disk
1389)  PC Technical is written in assembly language and has direct access to the system’s hardware for testing
1390) Check it pro deluxe gives detailed information about the system hardware
1391) The last 128k of reserved memory is used by mother board
1392) There are 80 cylinders are there for an 1.44 m floppy
1393) IBM changed ROM on the system to support key boards
1394) +12 V signal for disk drive is used for power supply
1395) CD ROM’s are single sided
1396) The storage capacity of a CDROM is 650 MB
1397) XGB has 2048 K graphic memory
1398) Most sound boards generate sounds by using fm synthesis
1399) Microscope helps you trouble shoot PS/2 system
1400) General purpose of diagnostic program run in batch mode