مدرسة البرمجه مع                        Information and Computer
المهندسه ساره عناني                            Technology
                                                           ICT
The first axis : The role of ICT in our lives
       Lesson4
Software and operating
        system
 Presented By: Eng.Sara Enany
      Lesson4
Software and operating
       systems
 البرمجيات وانظمة التشغيل
                  main points
Explain the basic function of O.S and software
Explain the difference between hardware and software
                  Software
System Software              Application
      O.S                     Software
                 Application
                  Software
• Directs the computer to execute a specified job.
• Such Word ,Excel, Internet Explorer.
                 System Software
                       O.S
• controls a computer’s internal functioning
  .
• controls such peripherals as monitors,
  printers, and storage devices.
• Such Windows,MAC,Android.
     The difference between hardware and software
 The SOFTWARE: is the set of
 programs (instructions) that
 make the computer do the
 processing and produce the
 desired result.
HARDWARE: is the physical part,
represented in the computer for its
mechanical parts, electronic and
magnetic short, the hardware is all
that can be touched.
Basically consists of: CPU (central
processing unit), memory units and
input or output.
  The steps to execute any instruction
         خطوات تنفيذ التعليمات علي الكمبيوتر
1-Ask the computer to do some thing using the input devices
     like open Microsoft word program by clicking on it using
the mouse
2-The computer tells the Operating system to execute it .
   The O.S access to the program and open it .
     Central processing unit(CPU)
       )وحدة المعالجه المركزيه(عقل الكمبيوتر
Central processing unit(CPU) is a hardware unit.
It controls what and how the data is processed.
          Writing Example
• When you type , the program tells the
 O.S which then ask the cpu to show
 information on the screen .
 What will happen if the program
         has a problem
• If the program has a problem before the
 O.S tells the CPU to save everything ,
 you can lose your work.
                      Remember to save your
                         work regularly
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               The definition of software
                    تعريف البرمجيات
SOFTWARE: instructions that tell a computer what to do.
The two main types of software are system software and application
software.
System software controls a computer’s internal functioning through
an operating system, and also controls such peripherals as monitors,
printers, and storage devices.
Application software:directs the computer to execute commands given by the
user and may be said to include any program that processes data for a user.
Such Word ,Excel,Internet Explorer.