Module 4 Computer Systems

Question 1

IPOS (Input-Processing-Output-Storage) Model

Answer 1

Users input data and the computer where it is processed into useable information that can be accessed to anser questions or meet specific needs

Input: data is entered

Processing: Something happens to data

Output: result of processing

Storage: data stored for future use

Question 2

Defining a computer system

Answer 2

Computer system is a colection of hardware and software components that work together to meet needs of a user

Networks and uers are often also considered to be a part of a computer system

Question 3

Computer Hardware

Answer 3

Physical components of computer and external components

Internal: CPU, Memory, Hard Drive ect

External: Monitor, Mouse, printer, keyboard, and the case containing internal components

Networks also have hardware such as cabels and wiring

Question 4

Computer Software: Systems Software & Application Software

Answer 4

Systems software includes the operating system and all the utilities that enabl the computer to function

Application software includes programs that do real work for users (word processors, spreadsheets, database management systems, ect)

Question 5

Timeline of Computer Development

Answer 5

1. Computers built and programmed by engineers
2. Limited use of computers by large organizations
3. Introduction of personal computers
4. Graphical user interface systems are introduced

Question 6

How computer users changed over last 75 years

Answer 6

Now almost ayone can be a computer user where in the past only computer scientists and people with specialized training could use

Question 7

Networks

Answer 7

Network protocols are necessary for computers to communicate with eachother

Businesses use networks for data sharing, cost reduction, and customer support