Explanation

• The CPU (Central Processing Unit) is the brain/heart of the computer.
• It performs all calculations, executes instructions, and controls other components.

Additional information:

• First commercial CPU: Intel 4004 (1971)
• Invented by: Italian physicist Federico Faggin
• CPU Examples: Clock speeds – 3.0 GHz, 3.5 GHz, 4.0 GHz, 4.5 GHz, 5.0 GHz

Last verified on 15-02-2026

Explanation

• A physical connection between the microprocessor memory and other parts of the microcomputer is known as an address bus.

Additional information:

• Address Bus carries the addresses of memory locations or I/O devices.
• Data Bus carries actual data between the CPU, memory, and other components.
• Control Bus carries control and timing signals.

Last verified on 10-08-2026

Explanation

15 men × 20 days = 300 man-days (total work)

Now, with 25 men:

300 man-days ÷ 25 men = 12 days

Verified & Updated

Explanation

Abacus was the first mechanical calculator

Abacus was invented by Tim Cranmer.

Abacus was invented in 1962.

Explanation

Explanation

Explanation

Karachi is called the "Gateway of Pakistan"

It has an ideal location and well-developed connections to form gateways region with:

• Afghanistan,
• Central Asia,
• and Western China

Additional information:

It was the first capital of Pakistan.

It is the biggest city in Pakistan.

The capital of Karachi is Sindh.

Explanation

The best guava is located in Larkana city۔

Larkana is also called city of martyrs.

Larkana is located in Sindh.

Explanation

35×100÷5 = 700

5÷100× x= 35 5x÷100=35 5x=3500 x=3500÷5 x=700

AGM 07.5.23

Explanation

The main electronic component used in first-generation counterparts was Vacuum Tubes and Valves.

Leo is called the first-generation computer.

The five generations of computers:

1. First Generation (1946-1959 or 1940-1956): Vacuum tube-based technology (e.g., ENIAC).
2. Second Generation (1959-1965 or 1956-1963): Transistor-based technology.
3. Third Generation (1965-1971 or 1964-1971): Integrated circuit-based technology.
4. Fourth Generation (1972-1980): VLSI microprocessor-based technology.
5. Fifth Generation (1980-present): ULSI microprocessor-based technology, with a focus on artificial intelligence.