The Needs Of Computation
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1) Humans use problem solving techniques to address challenges in everyday life like moving faster or making more food. 2) Mathematics provides a way to represent problem solving steps that can be executed by machines, allowing humans to leverage computation. 3) Computers were developed to automate computation, representing problems mathematically and executing the steps numerically in a binary system for performance and reliability.
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The document discusses the basic components and functions of a mouse, windows, menus, dialog boxes, and how to get help and shut down in Windows. It describes how to use the mouse buttons to click, drag, and right-click. Menus provide options that can be selected using the mouse or keyboard shortcuts. Dialog boxes contain buttons and boxes to input information. Help is available through the Help menu in applications or online support. Windows can be arranged and switched between. The Start menu offers options to log off or shut down the computer.
Power Point Lesson 10 Part1
This document provides instructions for performing various file management tasks in Windows Explorer such as creating and renaming folders and subfolders, recognizing different icon types, opening and running files from Explorer, selecting and copying or moving files between locations, and deleting folders. It also discusses compatibility issues when working with both short (8.3) and long filenames as well as how to use Disk Cleanup and Disk Defragmenter utilities.
Power Point Lesson 07 P1
The document provides an overview of the Windows operating system. It describes the basic features and components of Windows XP, including the desktop, taskbar, start menu, quick launch bar, mouse pointer, and windows. It also outlines how to log on to Windows, move around the desktop using a mouse, and access help features. The document is intended to teach computer literacy basics about the Windows operating system.
Power Point Lesson 04
The document discusses computer software and its role in computing. It defines software as the instructions that tell a computer what to do and distinguishes it from hardware. It describes the software development process and different types of software like applications software and systems software. It explains operating systems provide an interface between users and computers and lists some examples like Windows, Mac OS, Unix. It also discusses user interfaces, describing command-line and graphical interfaces. Finally, it provides an overview of the boot process when starting a computer.
Power Point Lesson 05
This document provides an overview of essential computer skills, including how to start and shut down a computer properly, use storage media, open and manipulate windows, create and manage files and folders, start and exit programs, and install new software. It defines key aspects of a graphical user interface (GUI) like the desktop, icons, menus, and windows. It also explains how to format disks, move and copy files, select multiple files, switch between open windows, and exit programs. The summary highlights these topics in 3 sentences or less.
Number Systems
The document discusses number systems and data representation in computers. It explains that computers use the binary number system to represent numeric and alphanumeric data. Binary representations allow computers to distinguish different states using digits of 0 and 1. The key points are:
- Computers use the binary system to represent data as strings of bits (0s and 1s) that can be processed electronically
- Numeric data such as integers are represented using binary formats like binary, sign-magnitude, 1's complement, and 2's complement
- Text and character data are represented using coding schemes like ASCII which assign a unique binary code to each character
- Floating point representation is used to store real numbers in a binary format using a sign bit,
Power Point Lesson 03
The document discusses maintaining and protecting computer hardware. It explains how to evaluate hardware components when purchasing or upgrading, how input and output devices connect to computers, and basic maintenance tasks like cleaning and virus protection. Regular inspections and troubleshooting steps can identify problems before they escalate. Uninterruptible power supplies and surge protectors help prevent damage from power issues. Security measures like firewalls protect the system from hackers and viruses.
Power Point Lesson 01
A computer is an electronic device that receives data, processes it, stores the results, and produces an output. Early computers were large machines but computers now come in various sizes from supercomputers to microcomputers like desktop, laptop, and tablet computers. Computers are integrated into networks to allow sharing of data and resources within an organization using intranets or between organizations using the internet or extranets.
Power Point Lesson 02
The document provides an overview of computer hardware components and how they work together in a system. It defines the basic functions of input, processing, output, and storage. The central processing unit (CPU) and memory on the motherboard are described as the main components for processing data. A variety of input and output devices are covered, as well as different types of storage media like hard drives, flash memory, and optical disks that allow for permanent storage of data.
Nanotechnology
The Next Very BIG (small) Thing
Contents:
Introduction to Nanotechnology
Applications In Today's Life
Advantages & Disadvantages
Future Of Nanotechnoogy
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