Introduction to computers

1. High Speed

Computers can process data and perform calculations much faster than humans.
Example: A computer can calculate millions of operations per second.

2. Accuracy

Computers perform tasks without errors if the data and instructions are correct.
Example: Used in banking, billing, and scientific research where precision matters.

3. Storage Capacity

Computers can store large amounts of data and retrieve it easily and quickly.
Example: Entire libraries, photos, and records can be stored in a single computer.

4. Automation

Once programmed, a computer can perform tasks automatically without constant human supervision.
 Example: Automatic payroll, online transactions, and manufacturing systems.

5. Versatility

Computers can perform many different tasks — typing documents, playing music, designing, calculating, etc.
 Example: A laptop can be used for both study and entertainment.

6. Reliability

Computers can work continuously for long hours without getting tired or losing concentration.
Example: Servers run 24/7 to keep websites active.

demerits of computers

1.High Cost

Some computers and related equipment (servers, software, networks) are expensive to buy and maintain.
 Example: Setting up computer labs or data centers requires high investment.

2. Unemployment

Automation of tasks by computers can replace human labor, leading to job loss.
Example: Machines replacing cashiers or clerks.

3. Virus and Hacking Risks

Computers are vulnerable to viruses, malware, and hacking, which can damage data or systems.
Example: Data breaches in organizations.

4. Health Problems

Long hours of computer use can cause eye strain, back pain, and stress.
Example: Office workers experiencing computer-related fatigue.

5. Lack of Creativity

Computers can only follow programmed instructions — they cannot think creatively like humans.
Example: They rely on human input to solve new problems.