3. How did early people calculate ?
4. Write any two advantages of fourth generation computers.
5. What are laptop computers?
Answers
Explanation:
4: They were developed for totally general purpose use (general-purpose computers). Smaller in size and much reliable than other generations of computer. The heat generation was negligible. No cooling system required in many cases of the fourth-generation computer.
3. Ans- An abacus is a device composed of beads that slide along rods, which fit into a frame. In ancient times, the abacus was used as a calculator; it aided in performing mathematical processes like counting, addition, subtraction, and multiplication.
4. Ans - They were developed for totally general purpose use (general-purpose computers). Smaller in size and much reliable than other generations of computer. The heat generation was negligible. No cooling system required in many cases of the fourth-generation computer.
5. Ans - A laptop, is a small, portable personal computer with a "clamshell" form factor, typically having a thin LCD or LED computer screen mounted on the inside of the upper lid of the clamshell and an alphanumeric keyboard on the inside of the lower lid. The clamshell is opened up to use the computer.