Chapter 5 The System Unit of a Computer System



Chapter 5 The System Unit of a Computer System

1. Transistor, integrated circuit, ALU, CPU, motherboard, system unit, hardware, computer

2. Microprocessor, RAM

3. ALU: (b), (e)

CU: (a), (c), (d)

5. (a), (d), (e)

6. (a) 2 × 108 Hz

(b) 2.4 × 109 Hz

7. Approximate Actual size

(a) 256,000 bytes 262,144 bytes

(b) 1.28 × 108 bytes 134,217,728 bytes

(c) 5.12 × 108 bytes 536,870,912 bytes

(d) 2.0 × 109 bytes 2,147,483,648 bytes

(b) control unit

(c) arithmetic and logic unit

(d) random access memory

(e) read only memory

(f) megahertz

(g) gigabyte

9. RAM ROM

(a) IC IC

(b) data/instructions being processed system program and data

(c) volatile non-volatile

(d) yes; memory size can be increased no

(e) same same

(f) read and write read only

10. (a) CMOS

(b) ROM

(c) RAM

(d) RAM

11. (a) Data bus

(b) It means that there are 64 bits of data transmitted from one location to another at a time.

12. (a) Memory access is direct. An address is needed to access a piece of information in the memory

(b) Bi-directional

13. (a) A system bus connects between the CPU and memory. A peripheral bus connects the memory and peripheral devices.

(b) PCI, USB, ISA, SCSI, AGP

14. (a) 1. both connected to the peripheral bus

2. both connected to peripheral devices

(b) Port: USB port, serial port, parallel port, SCSI port, keyboard and mouse port, IEEE 1394 port, IrDA port.

Interface card: sound card, VGA card, network interface card (NIC), modem card

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