A computer is an electronic device that takes data and instructions as input, processes the data and produces useful information as output.
First Calculating machine: Abacus means calculating board.
Mechanical device Napier Bones for the purpose of multiplication.
Slide rule for addition, subtraction, multiplication and division.
Pascal’s adding and subtractory machine.
Leibniz’s multiplication and dividing machine.
Charles babbage’s analytical engine.
Mechanical and electrical calculator to perform all type of calculation.
Modern electronic calculator.
||||The compilation and execution process of C can be divided into multiple steps:|||
Preprocessing - Using a Preprocessor program to convert C source code in expanded source code. "#includes" and "#defines" statements will be processed and replaced actually source codes in this step.
Compilation - Using a Compiler program to convert C expanded source to assembly source code.
Assembly - Using a Assembler program to convert assembly source code to object code.
Linking - Using a Linker program to convert object code to executable code. Multiple units of object codes are linked to together in this step.
Loading - Using a Loader program to load the executable code into CPU for execution.
|||Steps to solve a Problem||||
Analyze the problem.
Divide the process used to solve the problem in a series of tasks.
Formulate the algorithm to solve the problem.
Convert the algorithm in computer program.
Write the program in computer.
Input the data.
Program operates on input data.
Result produced.
Send the generated result to output unit to display it to user.
A computer is an electronic device that takes data and instructions as input, processes the data and produces useful information as output.
First Calculating machine: Abacus means calculating board.
Mechanical device Napier Bones for the purpose of multiplication.
Slide rule for addition, subtraction, multiplication and division.
Pascal’s adding and subtractory machine.
Leibniz’s multiplication and dividing machine.
Charles babbage’s analytical engine.
Mechanical and electrical calculator to perform all type of calculation.
Modern electronic calculator.
||||The compilation and execution process of C can be divided into multiple steps:|||
Preprocessing - Using a Preprocessor program to convert C source code in expanded source code. "#includes" and "#defines" statements will be processed and replaced actually source codes in this step.
Compilation - Using a Compiler program to convert C expanded source to assembly source code.
Assembly - Using a Assembler program to convert assembly source code to object code.
Linking - Using a Linker program to convert object code to executable code. Multiple units of object codes are linked to together in this step.
Loading - Using a Loader program to load the executable code into CPU for execution.
|||Steps to solve a Problem||||
Analyze the problem.
Divide the process used to solve the problem in a series of tasks.
Formulate the algorithm to solve the problem.
Convert the algorithm in computer program.
Write the program in computer.
Input the data.
Program operates on input data.
Result produced.
Send the generated result to output unit to display it to user.
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Parts of a Computer system. The system unit, I/O devices and peripheral devices. All of the electronic and mechanical equipment in a computer is called the hardware. Examples include:
Motherboard
Hard disk
RAM
Power supply
Processor
Case
Monitor
Keyboard
Mouse
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Parts of a Computer system. The system unit, I/O devices and peripheral devices. All of the electronic and mechanical equipment in a computer is called the hardware. Examples include:
Motherboard
Hard disk
RAM
Power supply
Processor
Case
Monitor
Keyboard
Mouse
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Macroeconomics- Movie Location
This will be used as part of your Personal Professional Portfolio once graded.
Objective:
Prepare a presentation or a paper using research, basic comparative analysis, data organization and application of economic information. You will make an informed assessment of an economic climate outside of the United States to accomplish an entertainment industry objective.
Exploiting Artificial Intelligence for Empowering Researchers and Faculty, In...Dr. Vinod Kumar Kanvaria
Exploiting Artificial Intelligence for Empowering Researchers and Faculty,
International FDP on Fundamentals of Research in Social Sciences
at Integral University, Lucknow, 06.06.2024
By Dr. Vinod Kumar Kanvaria
2024.06.01 Introducing a competency framework for languag learning materials ...Sandy Millin
http://sandymillin.wordpress.com/iateflwebinar2024
Published classroom materials form the basis of syllabuses, drive teacher professional development, and have a potentially huge influence on learners, teachers and education systems. All teachers also create their own materials, whether a few sentences on a blackboard, a highly-structured fully-realised online course, or anything in between. Despite this, the knowledge and skills needed to create effective language learning materials are rarely part of teacher training, and are mostly learnt by trial and error.
Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
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Acetabularia acetabulum is a single-celled green alga that in its vegetative state is morphologically differentiated into a basal rhizoid and an axially elongated stalk, which bears whorls of branching hairs. The single diploid nucleus resides in the rhizoid.
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Francesca Gottschalk from the OECD’s Centre for Educational Research and Innovation presents at the Ask an Expert Webinar: How can education support child empowerment?
1. Lecture 02: Introduction to Computers
109101– Introduction to ICT
Dr. Bilal Ahmad Khan
Assistant Professor (EE)
Institute of Space Technology, Islamabad
bilalahmad.ist@ist.edu.pk
bilal.khan@ist.edu.pk
http://www.bilalahmadkhan.com
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Computers are electronic devices that can follow instructions to
Accept input
Process that input
Produce information
Alternatively, a computer is a device capable of performing
calculations and making logical decisions at speeds millions, and
even billions, of times faster than human beings can.
What is a Computer?
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For example
Many of today’s Personal Computers can perform tens of millions of
additions per second.
A person operating a desk calculator might require decades to complete
the same number of calculations a powerful personal computer can
perform in one second.
Supercomputers can perform hundreds of billions of additions per second.
And trillions-instructions per second computer are already functioning in
research laboratories.
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1950's
Large devices, accessible to few people
1960's
Commercial usage emerges
Operated by experts
1970's
Computers cheaper, smaller
1990's
Computers fast, small, inexpensive
Owned and used by many people
Computer History
5.
6. The Language of a Computer
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Uses digital signals
all 0's and 1's (binary)
bits (BInary digiTs)
Data and commands stored in binary
8 bits in a byte
ASCII character stored in a byte
Integers stored in 2 or 4 bytes
8. Evolution of Programming Languages
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Early computers programmed in machine languages
All binary numbers
Assembly language used mnemonic codes
Codes translated
into machine
language by a
program called
the assembler
9. Evolution of Programming Languages
Programming
Languages
Lower-level
First
Generation
Machine
Language
Second
Generation
Assembly
Language
Higher-level
Third
Generation
C, C++, Java,
JavaScript
Fourth
Generation
Perl, PHP,
Python, SQL
Fifth
Generation
Mercury,
Prolog
10. Components of a Computer
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Hardware
The physical components of a computer
keyboard
mouse
monitor
speakers
Software
The programs that run on a computer
Word-processor
Calculator
Spread-sheets
Firmware
Programs permanently stored in computer ROM
12. Computer Hardware
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Processor
It is the brain of a computer
It reads instructions and executes them one at a time
Multi-core processors can execute multiple instructions
Components like video cards may have their own dedicated processor to
decrease the burden the over-head on the main processor (on the
motherboard)
13. Computer Hardware
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Processor (continued)
The overall performance of a computer is greatly dependent on the
processor’s speed
Memory
It serves as a temporary store-room for the programs being run. e.g., when a
game is started, it is first loaded into Memory
ANALOGY: Books are kept in the shelf, while the one to be studied is placed on
the table
14. Computer Hardware
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Memory (continued)
RAM serves as the ‘Main Memory’ for the system
The OS reserves a portion of RAM for itself
Every subsequent program is given a share in RAM
Devices like video cards have their own dedicated memory to share burden
with RAM
15. Computer Hardware
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Cache
Moving data from RAM is very much time consuming because RAM is very
slow
Hence cache is used; much faster
CPU f i
rst looks in the cache, if the required instructions aren’t present there,
it fetches it from RAM and saves a copy in the cache as well for future use
16. Computer Hardware
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Cache (continued)
Cache is found;
Built into the CPU (L1 cache)
External cache on the CPU (L2 cache)
Cache on the motherboard (L3 cache) (in high-end systems)
Also found on Hard drives and Network cards etc.
Duties …
L1 cache holds the most recently used instructions
L2 cache holds the possibly upcoming instructions
L3 cache holds a number of possibly required instructions
17. Computer Hardware
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Input Devices
Through which computer takes input from the user e.g., Mouse, Keyboard,
microphone, camera etc.
Trackballs, trackpads, pens and touch screens are variants of mouse
In addition Game controllers, Bar Code Readers and Optical character
Recognition (OCR) are other input devices
19. Computer Hardware
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Storage Devices
Store the data permanently so that it isn’t lost by removing power
Examples:
Magnetic Storage Devices include Floppy Disks and Hard Disks
Optical Media include CD-ROMs, DVD-ROMs and now Blue-Ray are
coming
20. Computer Hardware
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Bus
A bundle of wires running between different components of a computer,
providing a means of transferring data and the control signals
Two types
Internal (system) bus; resides on the motherboard and connects CPU to the
devices that reside on the motherboard
External (expansion) bus; connects external devices, such as mouse, modem,
keyboard, printer etc. to the CPU/motherboard
21. Computer Hardware
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Bus (continued)
The system bus has two parts;
Data Bus
Connects CPU, RAM and other devices on the motherboard
Number of wires affects the number of bits that can be carried at a time,
normally 16-bit, 32-bit and 64-bit buses are available
Like CPU, bus has its own clock-speed, normally 100MHz or 133 MHz. 800 MHz
in high computers
Address Bus
Connects only the RAM and CPU, used for addressing
22. Computer Hardware
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Bus Standards (continued)
AGP (Accelerated Graphics Port)
Based on a special architecture that allows the video card to access the
RAM directly
Not supported by old PCs
USB (Universal Serial Bus)
Hot swappable
A hot swap is inserting or removing a component of a device while it is
operating.
Hot-swappable indicates an aspect of a device that allows such an operation.
23. Software
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Set of instructions that tell the processor what steps to take
Software brings the machine to life
Discussed in detail in a later chapter
24. Firmware
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Firmware is a set of very basic instructions to guide the computer through the
initial steps on startup
Burnt permanently into the system
BIOS (Basic Input Output System) is an example
25. Components of a Computer
Hardware
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CPU
Memory
I/O Devices
Etc…
Software
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Application Software
System Software
26. A Typical Computer System
Printer
(output)
Monitor
(output)
Speaker
(output)
Scanner
(input) Mouse
(input)
Keyboard
(input)
System unit
(processor, memory…)
Storage devices
(CD-RW, Floppy,
Hard disk, zip,…)