SAR 20 / Book On Computer Systems & Software

I have Computer Systems & Software-101 for Sale. I am selling it for 20 Riyals.
This book is good for high school students, college students and people who are interested in increasing their knowledge or changing their profession to IT.

It contains the following things:
Types Of Computer Systems
PC Components
Processors Specifications
Factors that affect the processor speed
Components of a motherboard
Primary Storage
RAM or Random Access Memory
ROM or Read-only memory
Secondary Storage
Network and Different Types of Networks
Types of networks
Network Systems
Network hardware
Network media
Comparison Between Laptop And PC
Peripheral Devices
Input Devices
Output Devices
Operating System
Operating System Seen Through A User
Web Applications
Mobile applications

Interested people can contact me on 0538932933