OpSys3

Front

Name the three components the CPU contains.

Back

Arithmetic logic unit, control unit, memory

Front

Name the three digital bus systems each computer system contains according to the Von Neumann architecture.

Back

Control bus, address bus, data bus.

Front

Name the tasks that are carried out by the three digital bus systems

Back

Control bus: Transmits commands (e.g. read and write requests) from the CPU and returns status signals from the I/O devices.

Address bus: Transmits memory addresses. Data bus: Transmits data between CPU, main memory and I/O devices.

Front

Explain what the Front Side Bus (FSB) is

Back

It is the bus between CPU and chipset. It contains the address bus, data bus and control bus.

Front

Give the names of the two components the chipset contains

Back

Northbridge und Southbridge

Front

Name the tasks of the components of the chipset.

Back

The Northbridge is used for the connection of main memory and graphics card(s) with the CPU. It is located close to the CPU for rapid data transfer. The Southbridge is used for „slow“ connections like Ethernet, SATA and USB.

Front

Give the names of the two groups of Input/Output devices for computer systems that can be distinguished according to their minimum transfer unit.

Back

Character devices and block devices.

Front

Describe the different operating principles of the groups of character and block devices

Back

Character devices: On arrival/request of each single character, communication with the CPU always takes place

Block devices: Data transfer takes place only when an entire block (z.B. 1-4 kB) exists.

Front

Name two examples for each group from Character and Block devices

Back

Character devices: Mouse, keyboard, printer, terminal, magnetic tape. . .
Block devices: HDD, SSD, CD/DVD drive, floppy drive. . .

Front

.Name three possible ways for processes to read data from Input/Output devices.

Back

• Busy waiting

• Interrupt-driven

• Direct Memory Access (DMA)