6. List the following in increasing order (slowest to fastest): megahertz, kilohertz,
gigahertz.
a. kilohertz, megahertz, gigahertz
7. What is the bus of a computer?
a. The bus is the electrical connection between different computer components.
8. Name two differences between RAM and a hard disk.
a. RAM is volatile; the hard disk is non-volatile. Data access in RAM is faster than on
the hard disk.
9. What are the advantages of solid-state drives over hard disks?
a. The main advantage is speed: an SSD has much faster data-access speeds than
a traditional hard disk.
10. How heavy was the first commercially successful portable computer?
a. The Compaq PC was 28 pounds.