, , and are the four main hardware components of a computer.
The reads from , and in .
Eamples of storage hardware are
CD/DVD
Hard Disk
USB key/thumb drive
Solid state drive
keyboard
The basic types of computer hardware are
Personal Computer
Tablet
Smart Phone
Server
Server Farm
Router
The smallest unit of data is a .
It takes to represent one .
Eight bits are equivalent to one byte.
A kilobyte is equivalent to bytes.
The speed of a CPU is measured in
bits
Bytes
hertz
The end user's computer is known as the . In some applications, it talks to a .
IoT stands for
The following are the most common categories of application design
Native
Thin Client
Thick Cllient
Web
Apple
For non-mobile clients, the most common operating systems are , , and .
For mobile clients, the most common operating systems are , , , ,
For servers, the most common operating systems are , and .
, and can all be virtualized.
A software site license means that all users at Company X's sites are licensed to use the software.
Custom-developed software is usually less expensive than off-the-shelf software.
Company X does not have a lot of money to spend on a new application. However, it used processes that are unique and provide it with a competitive advantage. The best approach for developing their new application would be
Off-the-shelf
Off-the-shelf then customize
Custom-devleoped
Firmware is special software installed in read only memory. It is easily updated by the end user.
Programmers volunteer their time to Open Source Projects because
It gives them freedom to choose the projects to work on
Allows them to use their creativity on interesting and fulfilling projects
Helps them exhibit their skills to help get a new paying job
Enables them to start a new business
Lets then get free stuff
Because Open Source software is free, it is always the best choice.
Using "free" Open Source software could result it that exceed
Native applications can be purchased from an whereas web applications are purchased via a .
In a native application, processing is done on the client's PC remote server( client's PC, remote server ) whereas on a web application the processing is done on a remote server.
A web based application can run on any but may be limited by .
Thin-client applications are usually cheaper to develop and maintain.
Showrooming can be good for a web-only based company but bad for a based company.
The five components of mobile change and opportunity are : , ,, and .
BYOD stands for Bring Your On Device.
When a company allows its employees to bring their own devices to work, support costs always go down.
and the are two of the biggest issues with BYOD.
One of the most serious security issues in the past several years was known as
Heartbleed
Heartburn
Firesheep
Apple is an excellent example of a company because they control , and .
