1. The document discusses various methods of data transfer between software and computers, including file conversion between different versions of software, the use of ASCII codes to represent characters, and common file formats like CSV that allow transfer between programs.
2. It also covers topics like analog and digital computers, file compression, and analog to digital conversion processes used in devices like modems and sound cards.
3. Methods of transferring text files between different word processors by saving everything in ASCII format are described, as well as how comma separated variable files can be read by most spreadsheets and databases.
INTRODUCTION TO INFORMATION TECHNOLOGY SARASWATHI RAMALINGAMSaraswathiRamalingam
COMPUTER BASIC MCQ,MCQ,Data Representation ,Programming Languages /Computer Languages ,Software: System Software , Application Software,SIMPLE MCQ,INTRODUCTION TO INFORMATION TECHNOLOGY,COMPUTER BASICS
Chapter 2Hardware2.1 The System Unit2.2 Data and PEstelaJeffery653
Chapter 2
Hardware
2.1 The System Unit
2.2 Data and Program Representa-
tion
2.2.1 Digital data and numerical data
Most computers are digital computers which use a spe-
cific language to communicate within itself in order to
process information. If there are programs running in
the background or a person is typing up a word docu-
ment for example, the computer needs to be able to in-
terpret the data that is being put into it by the human as
well as communicate to working components within it-
self. This language that digital computers use is called
binary code and is a very basic form of language com-
posed of only two figures; 1 and 0. Whereas the English
language is composed of 26 figures which we commonly
call the alphabet, computers use a language composed of
only two figures, hence its name Binary Code. Binary lit-
erally means two and refers to anything that consists of,
involves, or indicates two. The language known as Binary
Code operates on a system of 1’s and 0’s strung together.
Each 1 or 0 is referred to as a “bit.” “Bits” are the smallest
unit of data that a binary computer can recognize and ev-
ery action, memory, storage, or computation that is done
through a computer is composed of them. From playing
music through your speakers to cropping a photograph, to
typing up a document and preparing an important presen-
tation all the way down the line to browsing the internet
or picking up on a wifi signal in your area, everything
uses “bits” to complete the task needed. “Bits” string
into larger lines of information the way letters string into
words and then sentences. When eight “bits” are com-
pounded in this way they are then referred to as a “byte”.
“Bytes”, which are made up of “bits”, are commonly used
when referring to the size of the information being pro-
vided. For example, a song that is downloaded may con-
tain several kilobytes or perhaps even a few megabytes if
it is a whole c.d. and not just a single track. Likewise, pic-
tures and all other documents in general are stored on the
computer based on their size or amount of bytes they con-
tain. The amount of information that can be stored onto
a computer is also shown or displayed in bytes as is the
amount left on a computer after certain programs or doc-
uments have been stored. Since bytes can be extremely
long, we have come up with prefixes that signify how large
they are. These prefixes increase by three units of ten
so that a Kilobyte represents 1,000 bytes, a Megabyte
represents 1,000,000 bytes or one million bytes, a Giga-
byte represents 1,0000,000,000 or one billion bytes, etc.
Computers components have become so small that we can
now store larger and larger amounts of data bytes in the
same size computers resulting in the use of other larger
prefixes such as Tera, Peta, Exa, Zetta, and Yotta. Be-
low is a chart outlining the name of the prefix used and
powers of ten they symbolize.
0 1 1 0 1 0 0 0
1 1 0 1 0 0 0 0 0
1 0 0 1 1 1 0 1
0 1 0 0 1 1 1 00
1 ...
INTRODUCTION TO INFORMATION TECHNOLOGY SARASWATHI RAMALINGAMSaraswathiRamalingam
COMPUTER BASIC MCQ,MCQ,Data Representation ,Programming Languages /Computer Languages ,Software: System Software , Application Software,SIMPLE MCQ,INTRODUCTION TO INFORMATION TECHNOLOGY,COMPUTER BASICS
Chapter 2Hardware2.1 The System Unit2.2 Data and PEstelaJeffery653
Chapter 2
Hardware
2.1 The System Unit
2.2 Data and Program Representa-
tion
2.2.1 Digital data and numerical data
Most computers are digital computers which use a spe-
cific language to communicate within itself in order to
process information. If there are programs running in
the background or a person is typing up a word docu-
ment for example, the computer needs to be able to in-
terpret the data that is being put into it by the human as
well as communicate to working components within it-
self. This language that digital computers use is called
binary code and is a very basic form of language com-
posed of only two figures; 1 and 0. Whereas the English
language is composed of 26 figures which we commonly
call the alphabet, computers use a language composed of
only two figures, hence its name Binary Code. Binary lit-
erally means two and refers to anything that consists of,
involves, or indicates two. The language known as Binary
Code operates on a system of 1’s and 0’s strung together.
Each 1 or 0 is referred to as a “bit.” “Bits” are the smallest
unit of data that a binary computer can recognize and ev-
ery action, memory, storage, or computation that is done
through a computer is composed of them. From playing
music through your speakers to cropping a photograph, to
typing up a document and preparing an important presen-
tation all the way down the line to browsing the internet
or picking up on a wifi signal in your area, everything
uses “bits” to complete the task needed. “Bits” string
into larger lines of information the way letters string into
words and then sentences. When eight “bits” are com-
pounded in this way they are then referred to as a “byte”.
“Bytes”, which are made up of “bits”, are commonly used
when referring to the size of the information being pro-
vided. For example, a song that is downloaded may con-
tain several kilobytes or perhaps even a few megabytes if
it is a whole c.d. and not just a single track. Likewise, pic-
tures and all other documents in general are stored on the
computer based on their size or amount of bytes they con-
tain. The amount of information that can be stored onto
a computer is also shown or displayed in bytes as is the
amount left on a computer after certain programs or doc-
uments have been stored. Since bytes can be extremely
long, we have come up with prefixes that signify how large
they are. These prefixes increase by three units of ten
so that a Kilobyte represents 1,000 bytes, a Megabyte
represents 1,000,000 bytes or one million bytes, a Giga-
byte represents 1,0000,000,000 or one billion bytes, etc.
Computers components have become so small that we can
now store larger and larger amounts of data bytes in the
same size computers resulting in the use of other larger
prefixes such as Tera, Peta, Exa, Zetta, and Yotta. Be-
low is a chart outlining the name of the prefix used and
powers of ten they symbolize.
0 1 1 0 1 0 0 0
1 1 0 1 0 0 0 0 0
1 0 0 1 1 1 0 1
0 1 0 0 1 1 1 00
1 ...
Have you ever wondered how search works while visiting an e-commerce site, internal website, or searching through other types of online resources? Look no further than this informative session on the ways that taxonomies help end-users navigate the internet! Hear from taxonomists and other information professionals who have first-hand experience creating and working with taxonomies that aid in navigation, search, and discovery across a range of disciplines.
This presentation by Morris Kleiner (University of Minnesota), was made during the discussion “Competition and Regulation in Professions and Occupations” held at the Working Party No. 2 on Competition and Regulation on 10 June 2024. More papers and presentations on the topic can be found out at oe.cd/crps.
This presentation was uploaded with the author’s consent.
Acorn Recovery: Restore IT infra within minutesIP ServerOne
Introducing Acorn Recovery as a Service, a simple, fast, and secure managed disaster recovery (DRaaS) by IP ServerOne. A DR solution that helps restore your IT infra within minutes.
Sharpen existing tools or get a new toolbox? Contemporary cluster initiatives...Orkestra
UIIN Conference, Madrid, 27-29 May 2024
James Wilson, Orkestra and Deusto Business School
Emily Wise, Lund University
Madeline Smith, The Glasgow School of Art
0x01 - Newton's Third Law: Static vs. Dynamic AbusersOWASP Beja
f you offer a service on the web, odds are that someone will abuse it. Be it an API, a SaaS, a PaaS, or even a static website, someone somewhere will try to figure out a way to use it to their own needs. In this talk we'll compare measures that are effective against static attackers and how to battle a dynamic attacker who adapts to your counter-measures.
About the Speaker
===============
Diogo Sousa, Engineering Manager @ Canonical
An opinionated individual with an interest in cryptography and its intersection with secure software development.
2. 2
Data transfer
Users often need to transfer data
between software packages or
computers.
Until relatively recently this was difficult
to achieve, but the increasing use of
computers and the growth of ICT has
forced software designers to make this
much easier.
File conversion from older to newer
versions of the software.
3. 3
File Conversion
File conversion is an important part of computing
If you r using new software version then there is a need that this
software will read the files from the old database.
It means that old data can be converted for use on newer
systems.
This saves considerable time because it avoids users having to re-
enter existing data onto a new system.
It is always important to make sure that any new software were buy can
read your old files.
Problems might arise with file conversion if the data is very old or
is formatted for a system that not longer exists.
However, most newer version of software are usually capable of
reading data from older versions (e.g. Word97 files can be read
by Word2002)
Most database, spreadsheet and word processing files can be read by
other packages as well .
However it is always important to check that this compatibility
between software packages and data works.
4. 4
ASCII
ASCII is the acronym for American Standard
Code for Information Interchange.
ASCII is a world-wide standard code for
representing characters (letters, numbers etc.)
as binary code.
Before its introduction, it was almost
impossible to transfer data between software
packages or computers.
For example the letter A has the ASCII code
0100 0001 and B is 0100 0010.
5. 5
An example of ASCII
HELLO! Is represented by the following
ASCII code:
H 0100 1000
E0100 0101
L0100 1100
L0100 1100
O 0100 1111
! 0010 0001
6. 6
ASCII Files
AMERCIAN STANDARD CODE FOR
INFORMATION INTERCHANGE.
This code is representing characters ( letters,
numbers) as binary codes.
All computers can store data as ASCII code and a
file used to hold ASCII code is called ASCII file.
The 8 bit binary codes used to hold the letters of
alphabet.
Let suppose ASCII code of character A is
A 01000001
7. 7
Transferring files between
word processors
The most common type of the file transfer is
between different word processors.
In large organizations people use different
versions of word processors, so there is a
need such a word processor which can be
compatible.
The only way to transfer text between
different word processors is to store
everything as ASCII file.
8. 8
Comma separated Variables
One common file format is “Comma
Separated Variables ” as CSV
The CSV File format is useful because it is
possible to transfer files.
Files in this format can be read by most
spreadsheets and databases.
9. 9
File Handling Packages
Backing storage devices such as disk drives are able to store
files outside the CPU.
These files could be program files which holds the series of
instruction then it will perform a useful tasks.
We need to perform file processes such as deleting, copying or
merging files.
If we want to say, delete or copy a large number of files then
there is a need a special software called the file packages.
Example:
A file used to hold a drawing you have drawn using a drawing
paint.
10. 10
Data/File Compression
Special software is able to reduce the size of
files to about one quarter of their size.
Zip Files are often use for that purpose
You can also unzip or decompress the files.
Program and data files are often compressed
before they are sent over the internet.
11. 11
Analog computers
It provides continuous value
It represents physical quantities in the form of
waves
It has no state
It has low memory
It is difficult to use
It is used in engineering and science
However, although analogue computers are
quite rare they do perform certain functions
better than digital computers (e.g. controlling
manufacturing processes in a factory; certain
type of modelling).
13. 13
Digital computers
It provides us discrete values
It represent physical values with help of
symbols or numbers
It has two states ON and OFF
It has big memory
These are easy to use
It is used in all field of life
15. 15
Analog to Digital conversion
and vice versa
In chemical factories ,the processes used to
make chemicals are usually controlled with
the help of computers. The signals from a
temperature sensor is a continually changing
analog to Digital (ADC) .
The computer then control the process by
outputting the digital-analog converter(DAC)
A modem is another example
16. 16
Modulator
In modem it is used to convert the binary
digits from a digital computer into an analog
signal that may be passed along telephone
wires.
18. 18
Sound Sampling
The sound cards listens to the sound and
takes a measurement of the height of the
signal many times a second. The
measurement called sound sampling.
The sampling rate is the number of times the
sample is measured per second called it is
kilohertz (KHz).
The higher the sampling rate the better the
sound reproduction.