cybercrime L3

software

intangible

software

set of programs (computer instructions), which helps the

user to do a set of specific tasks.

software

It helps the user interact with the computer system with the

help of hardware.

hardware

physical aspects of a computer system

hardware

tangible, meaning you can see and touch them

hardware

They help the users interface with the software, and also

display the result of the tasks being performed.

main components of a computer

1. Input Devices

2. Processors

3. Output Devices

4. Storage Devices

• Primary Storage Devices

• Secondary Storage Devices

input devices

It is any hardware device that sends data to a computer,

allowing you to interact with and control it

input devices

Ex. Keyboard, Mouse, Microphone, Camera/Webcam

central processing unit

brain of the computer

central processing unit

1. it performs all types of data processing operations

2. It controls the operation of all parts of the computer.

graphics processing unit

1. render 3D graphics, which are comprised of polygons.

2. This can improve the overall performance of a

   computer or other electronic device.

output devices

1. send data from a computer to another device or user.

2. is meant for humans such as audio, image or video.

output devices

Ex. Monitor/ Screen, Printers, Projectors, Speaker/

Headphones/ Earphones

primary storage devices

1. The internal components of a computer that store data and instructions that are currently in use.

2. They are also known as main memory, primary

   memory, internal memory, or main storage.

primary storage devices

Ex. RAM and ROM

ram (random access memory)

1. A volatile memory that stores data and instructions that are currently being used by the CPU.

2. it does not continue to hold the information in it once it loses power,

rom (read only memory)

1. a non-volatile memory on which data has been prerecorded.

2. retains its contents even when the computer is turned off.

3. Primarily stores the essential startup instructions for a

   computer, known as "firmware'", like BIOs (Basic Input/Output System), which is crucial for the initial boot process of a computer.

secondary storage devices

1. the external memory or non-volatile

2. used for storing data/information

   permanently.

3. CPU directly does not access these memories, instead

   they are accessed via input-output routines

secondary storage devices

USB Flash Drive (memory stick), Solid State Drive (SD

card), Hard Disk Drive, Floppy disk Drive, Optical Disk Drive

(CD, DVD)

hard disk drive

uses spinning magnetic disks

(platters)

hard disk drive

commonly used in older computers and for bulk

storage due to their larger capacities at a lower price

solid disk drive

A modern storage device that uses flash memory to store

data.

solid disk drive

It has no moving parts, allowing for faster read/write No

Notes. speeds, lower power consumption, and greater

durability

Digital information

Physical information has a fixed position in place

and time. This is not the case with digital information, which can be:

1. Rapidly duplicated and easily distributed

2. Stored in multiple locations

3. Created and communicated automatically

4. Stored with varying levels of 'discoverability'

5. Can be accessed remotely

6. Hard to permanently deleted