Lecture 1: Introduction to Computer Concepts and History of Computers Flashcards
an electronic device that takes data, process the data
according to a series of instruction
COMPUTER
called program and produces information
COMPUTER
an electronic device capable of performing mathematical and
logical operations.
COMPUTER
an electronic system designed to manipulate data.
COMPUTER
series of instruction that a computer must follow in order to process data into information.
PROGRAM
ENUMERATE: Capabilities of Computers
- It has the ability to perform mathematical and logical
operation. - It has the ability to store or remember a great amount and
variety of information and retrieve or recall the information
needed almost instantly. - It has the ability to handle large volume of repetitive tasks
accurately over long period of time. - It can communicate with its operators and other machines.
- It has the ability to control error and check itself.
ENUMERATE: Limitations of Computers
- The computer functions only when input and the necessary
instructions to process the information have been provided
by a human being. - It can detect but generally cannot correct inaccurate entry
by itself. - It is subject to occasional breakdown or computer
malfunction because of power failures, computer failure,
humidity, temperature and maintenance time.
ENUMERATE: Characteristics of Computers
- MACHINE
- ELECTRONIC
- AUTOMATIC
- MANIPULATE DATA
- MEMORY
- LOGIC FUNCTIONS
Computers can be used in:
- BUSINESS
- HOME
- ENTERTAINMENT
- SCIENTIFIC RESEARCH
- MILITARY
ENUMERATE: Benefits of Computers
- Storing or memorizing large amount of information.
- Quickly recalling a single piece of information.
- Rapidly performing a series of sequential tasks.
- Carrying out a specific action based on sensor reading or
other quantifiable information.
ENUMERATE: Types of Computers
- Mainframes
- Personal Computers
* Desktop Computers
* Laptop Computers - Tablet PCs
- Media Centre
- Personal Digital Assistants (PDAs)
considered as the 1st manual data processing device
ABACUS
developed in China in __________ and performs arithmetic calculations
ABACUS; 12TH CENTURY A.D.
developed by a Scottish mathematician John Napier, obtain products & quotients of large numbers
NAPIER’S BONES
NAPIER’S BONES is developed by?
SCOTTISH MATHEMATICIAN JOHN NAPIER
arithmetic operations could be done by simply sliding the
rulers
OUGHTRED’S SLIDE RULE
OUGHTRED’S SLIDE RULE is invented by ___________ in 17th century
WILLIAM OUGHTRED
could add & subtract numbers up to 8 digits
PASCAL’S CALCULATOR
PASCAL’S CALCULATOR is developed by a _______ mathematician ____________ in
1645
French; BLAISE PASCAL
it utilized the same techniques for addition & subtraction as
Pascal’s device but could also perform multiplication, division
& square root
LEIBNIZ CALCULATOR
LEIBNIZ CALCULATOR is invented by _____________ in ____
GOTTFRIED LEIBNIZ; 1964
developed by Charles Babbage, the Father of Modern Computer. It is not because of the machine he build but rather his ideas became the basis for modern computation devices
BABBAGE ANALYTICAL ENGINE
BABBAGE ANALYTICAL ENGINE
designed to use 2 types of cards:
VARIABLE CARDS AND OPERATION CARDS