Chapter 2: Computer systems

What is  abstraction

• Removal of unnecessary information so a computer program can be more efficient

• a central processing unit (CPU), memory, input/output devices and storage devices

• programs written and used for specific purposes.

The abstraction is organized into____ domains

• 1

• 3

• 2

• 4

The abstraction is organized into the domains following domains

1.Software domain

2.Digital domain

3.Analogue domain

• True

• False

1.Digital domain is made up of the following

• 1.Intergrated circuits

  2.componets

  3. Logic gates

  4. Architecture

• 1.Applications

  2.Operating system

  3. Libraries

  4. programming language

• Transistor

1.Analog domain is made up of the following

• 1.Intergrated circuits

  2.componets

  3. Logic gates

  4. Architecture

• 1.Applications

  2.Operating system

  3. Libraries

  4. programming language

• Transistor

match the following layer of abstraction in the software domain to its

description

-Applications

• you write and use

• you used to write software programs

• Is a useful functions with a specific purpose

• is used interface with the hardware

match the following layer of abstraction in the software domain to its

description

-Programming languages

• you write and use

• you used to write software programs

• Is a useful functions with a specific purpose

• is used interface with the hardware

match the following layer of abstraction in the software domain to its

description

- Operating systems

• you write and use

• you used to write software programs

• Is a useful functions with a specific purpose

• is used interface with the hardware

match the following layer of abstraction in the software domain to its

description

- Libraries

• you write and use

• you used to write software programs

• Is a useful functions with a specific purpose

• is used interface with the hardware

what is usability ?

• Ease of use, the degree to which something is able or fit to be used

• An exchange where one gives up one thing in order to get something else that one also wants

• means programs written and used for specific purposes.