Fundamentals of computer components of a computer system system software application software ram rom eapcet material
COMPUTER ORGANIZATION
Fundamentals
of computer
It is based
on a binary circuit EBCDIC logic
Extended
binary code for decimal interxhange code
Supporting
ASCII logic standard
Computer and
remaining electronic device difference --- memory
Which of the
following is the major difference between computer and remaining electronic
device ---cloud repository
Functional
units of the system
Input ---à processing unit…..> output
Component
which is used to insert the data to the system – input peripheral
Ex:
keyboard, mouse,joystic,omr,ocr,micr,scanner,voice records,graphic table,light
pen,voice recorder,touch pad,
Which of the
following is the primary input device?
a) Mouse b)keyboard c) both d) none
keyboard
Which of the following is used to identify thehologram
signalling and barcode readers ?
a) Scanner b) keyboard c)ocr d)micr
Micr
Which device
is used to detect the analog waves of
human body ?
Graphic
tablet
Component
which is used to display the processed
data?
Output
peripherals
Moniter ,
printer, speakers,projector screen
Which of the
following is a stdout device monitor
Which
peripheral component is used to convert hardcopy to softcopy ?
Scanner
Raw data to
png --- scanner
Zigzag to
mp4 format … videocam input
Pdf file to
raw data ---- printer
Soft copy to
hardcopy – printer
Which device
is used to convert pdf to zip ? processor
Processor is
one component to convert raw data to digital data
Raw data to
system signal (system calls)
Data bus
To recognize
all the peripherals which are connected
to the machine
To detect
network signals
To detect
cmos/bios internal tools
To identify
pci/isa slot data
In processor
component contains 3 internal parts
Memory unit
Control unit
Arithmetic
logic unit
Memory unit :
To identify
internal and external memory resources
And it plans
for job scheduling
Sequence
scheduling
Control unit :
Monitors all
the peripherals which are connected to machine and it controls the instructions
by the support of system software it controls the signals by system bus and
data bus
Arithmetic logic unit :
It performs
the instructions which are monitored by cu
Broths
algorithm based on performs operations
(8086 scsi
controller)
Small
computer system interface
Components of a computer system :
Peripheral/
hardware of the system
Cabinet
Mother board
All i/o
devices
Network
interface code
Cmos
Mother board :
Internal
memory
Pci slots
Isa slots
Jumper
settings
Cmos battery
Keyboard and
monitor connector
Power
conector
Chip sets
Socket 7
(processor solt)
Chip sets :
North bridge
South bridge
Types of softwares :
Software :
It is a
program to coordinate raw data and system resources
Buit of
statements (system calls) (instructions)
Post primary
functions to load the os from secondary memory to ram
1) System software
2) Application software
System software :
It is mainly
interacts with hardware resources
Its also
interacts with existing system architectures
It also
interacts with some raw data
Ex : loader,
linkers,assembles,device drivers,encoder,decoder,system calls
Dma system
calls
Application software :
It interacts
with user data or human readable data
Note :
All the
installed software’s except os & device drivers
Ex : c ,
java,programming language,office tools,chrome browser
( IE ,
safari ----- inbuilt browsers)
All the IDES
(integrated dev environment) :
How the
application software works :
By the
support of system software and os
Schema map :
It is a
temporary base table format
Used to identify
the available os resources
Path means :
It is a
secobdary storage data
Storage
location
Both
None
Ans : both
System calls
are related to :
Software and
system software
Bsic
functions of the application software
Easy to
implement user data
Who will operate
application software
Both user
and os and system software
Which of the
interface layer between user and operating system
Application
software
Utility softwares :
All the
utility softwares all called as inbuilt instructions or inbuilt methods
DLLS :
(dynamic link library fields)
. jar files , .dll files :
API -----
utility software
To resolve
the interrupts
Main memory and its types
Except
secondary memory all main memory
Main memory
some times we will call as
Primary
memory
System
memory
Inbuilt memory
(except ram)
Basic functionality of main memory :
It
recognizes all the system calls to store data temporarily
It is
volatile and nonvolatile
It detects
system buses and data buses
Is is used
to establish a connection between one resource to another resource
ROM :
Read only
memory
It is a non
volatile memory
It always
supports to the processor
It always
interacts with control unit and memory unit of the processor
Is supports
to the temporary instruction buffer (system call)
To the all
activated devices
It is
indirectly BIOS chip set (Basic input and out put system) to the all activated
devices
PROM :
Programmable
ROM
Is is not a
part of ROM
There is
three logical parts of memory
Auto exe.bat
file stored in prom
It is a
programme used to write the instructions or data on a temporary memory and permanent memory
Write the
instructions to the disk
PROM
supports RAID(data bucket)
Mirror disks
also non non volatile
EPROM:
Erasable
programmable read only memory
To read the
data from cylinders
To erase the
data on the cylinders
The fix the
bad clusters (unformatted space on the cylinders)
EEPROM :
Electrically
erasable programmable read only memory
Non volatile
when EEPROM is the active state it is
automatically activated to recover the problem
RAM :
Random
access memory
Volatile –
when power gone data lose
To store
data on temporary basis this memory is used to maintain page table temporary
basis
PARTS OF RAM
:
SRAM DRAM
SDRAM
SRAM :
Static ram
All
temporary applications stored in this memory
It holds the
current cursor location file
Pcb (
programmable control block) isrelated to SRAM
DRAM :
Dynamic ram
It creates
execution link for an application from permanent installed location to te
temporary available location
SDRAM :
Synchronous
dynamic ram
When the
sram and dram are in the interrupt stage sd ram memory is automatically
activate
No comments:
Post a Comment