Data Processing

Question 1

Some early mechanized computing devices, the year it was made, and who invented it??

Answer 1

Some early mechanized counting devices include

. The Abacus {invented by the Chinese in the early 2700BC}

. Napier Bone was {invented by John Napier in the year 1619}.

.The slide rule {invented by William Oughtred in the year 1622}

.The Pascaline {invented by Blaise Pascaline in the year 1642}

.The Leibniz Calculator{invented by Gorthfeid Leibniz in the year 1694}

Question 2

Classifications of computers

Answer 2

Computers can be classified by
.Generations {1st Gen, 2nd Gen, 3rd Gen, 4th Gen, 5th Gen}

.Type {Digital, Analog, Hybrid}

.Size {Micro, Mini, Mainframe, Supercomputers}

.Versatility {General Purpose Computers, Special Purpose Computers}

Question 3

Classification of computer based on Generations

Answer 3

.First Generation computers {Vacuum tubes} {1945 - 1959}

.Second Generation computers {Transistors} {1960 - 1965}

.Third Generation computers {Integrated Circuit} {1966 - 1975}

.Fourth Generation computers {Microprocessors} {1975 - 1990}

.Fifth Generation {Artificial Intelligence} (1990 - Till Date}

Question 4

ENIAC stands for?

Answer 4

Electronic Numerical Integrator And Computer

Question 5

EDVAC Stand for??

Answer 5

Electronic Discrete Variable Automatic Computer

Question 6

Database

Answer 6

A Database is a collection of related Data

Question 7

What is a DBMS

Answer 7

A Database Management system allows the computer to create, modify and access data in a database
.Some examples of Database Management systems include;
.MySQL
.Microsoft Access
.SQLserver
.Oracle
.Informix
.FoxPro

Question 8

Classification of computers by type

Answer 8

Digital computers; These type of computers compute in discrete form
e.g. Mini computers
       Microcomputers
       Mainframe computers
       Super computers

Analog computers; These computers operates by measuring the change that occurs in physical or electrical state

Hybrid computers; This is a combination of both Digital and Analog computers.

Question 9

What is Information Processing?

Answer 9

It is the change in information in any manner that is detectable by an observer.

Question 10

Stages of information processing

Answer 10

. Gathering of Data

. Preparation of Data

. Input of Data

. Processing of Data

. Storage of information

Question 11

Ways of organizing information

Answer 11

. Geologically
. Alphabetically
. Chronologically
. Statistically
. Based on subject

Question 12

Procedures for information processing

Answer 12

. Collation of information

. Analysis of information

. Interpretation of information

.Organization of information

Question 13

Operating System

Answer 13

This is a system software that controls the hardware and software resources of a computer

Question 14

Functions of an operating system

Answer 14

. File Management

. Security

. Error Detection

. Program Management

. Device Management

Question 15

What is a function in MS-Excel

Answer 15

A function is a predefined formula that is used to carry out Calculations on ms excel

Question 16

What is Database Management ??

Answer 16

It is the monitoring, administration and maintenance of a database.

Question 17

What is a data model

Answer 17

A data model is a formal description of how data can be structured and accessed

Question 18

Components of a data model

Answer 18

Structural Parts

Manipulative Parts and integrity rules

Question 19

What is Database security

Answer 19

It is a mechanism that protects the databasse from threats weather intentional or accidental

Question 20

What is access control??

Answer 20

It is a mechanism that controls data that is accessible to some users

Question 21

What is crash recovery??

Answer 21

It is the processing which a database is moved back to an unstable state

Question 22

Relationship between a file and a character

Answer 22

Database - File - Record - field - character

Question 23

Digitalization of data is ____________

Answer 23

the process in which physical data is converted into digital form

Question 24

Data Handling

Answer 24

This is the process of inputting and storing data in a computer

Question 25

Methods of handling Data

Answer 25

Electronic Method

Non - Electronic Method