LESSON-1.pptx

INTRODUCTION TO COMPUTING IT CP11 LESSON 1: COMPUTER AND DIGITAL BASIC Lesson 1.0 ALL THINGS DIGITAL Digital Revolution It is an ongoing process of social, political, and economic change brought about by digital technology, such as computers and the Internet. Like the...

INTRODUCTION TO COMPUTING IT CP11 LESSON 1: COMPUTER AND DIGITAL BASIC Lesson 1.0 ALL THINGS DIGITAL Digital Revolution It is an ongoing process of social, political, and economic change brought about by digital technology, such as computers and the Internet. Like the agricultural and industrial revolutions, the digital revolution offers advantages, but requires adaptations. Lesson 1.0 ALL THINGS DIGITAL The technology driving the digital revolution is based on digital electronics and the idea that electrical signals can represent data, such as numbers, words, pictures, and music. Examples of digital electronic devices: desktop computers. storage devices, such as flash drives laptop computers. tmobile phones. tablet computers. e-readers. input devices, such as keyboards, mice, and scanners Lesson 1.0 ALL THINGS DIGITAL Digitization - It is the process of converting text, numbers, sound, photos, and video into data that can be processed by digital devices. Significance of Digitization The significant advantage of digitization is that things as diverse as books, movies, songs, conversations, documents, and photos can all be distilled down to a common set of signals that do not require separate devices. Lesson 1.0.1 Data Processing Data Processing - It is based on an input-processing-output cycle To understand how a computer functions you must understand the information processing cycle. What is the information processing cycle? The sequence of events in processing information, which includes : input -entering data into the computer. processing - performing operations on the data Storage - saving data, programs, or future use. output - presenting the results Lesson 1.0.1 Data Processing Lesson 1.0. 2 Cloud Computing What Is Cloud Computing? Cloud computing can be described as a virtual pool of shared resources offering compute, storage, database, and network services that can be rapidly deployed at scale. Lesson 1.0. 2 Cloud Computing There are two huge factors that have contributed to the success of cloud computing: technological advancements, such as virtualization of compute instances and abundant high-speed internet access, and widespread investment in constantly building and updating infrastructure, which results in economies of scale. Because of these factors, cloud computing can take all the ingredients that make up a traditional data center and makes all these resources available to consumers on an as-needed basis. Lesson 1.0.2 Cloud Computing Characteristics of Cloud Technology Once you are comfortable with the general resources and services that cloud computing offers and how they relate to legacy data centers, you can move on to understanding the three main cloud deployment models. PUBLIC PRIVATE HYBRID Lesson 1.0.2 Cloud Computing Benefits of Cloud Computing A reduced need for on-site IT staff No on-site data centers means no on-site IT staff for the data centers. Cloud service providers have simplified this part of the equation by providing 99.99% uptime Service Level Agreements Cost-effectiveness Backup and disaster recovery Shared Responsibility Model Cloud providers must meet stringent compliance needs in order to prove they are safe for use by billion - dollar enterprises or governments. Lesson 1.0.2 Cloud Computing 5 Real-WorldExamples of Cloud Computing Ex: Dropbox, Gmail, Facebook. Ex: Maropost for Marketing, Hubspot, Adobe Marketing Cloud. Ex: SlideRocket, Ratatype, Amazon Web Services. Ex: ClearDATA, Dell's Secure Healthcare Cloud, IBMCloud. Uses: IT consolidation, shared services, citizen services. Lesson 1.0.3 Convergence Convergence - It is a process by which several technologies with distinct functionalities evolve to form a single product. A convergence is when two or more distinct things come together. Technology convergence is when different forms of technologies cohabitate in a single device, sharing resources and interacting, creating new technology and convenience. This simplistic definition is only the tip of the iceberg however, because technology convergence is technical and functional. Lesson 1.0.3 Convergence LESSON 1.1: DIGITAL DEVICES Lesson 1.1.1 What is a Computer? Computer is an electronic device that manipulates information, or data. It has the ability to store, retrieve, and process data. Lesson 1.1.1 What is a Computer? Computer System Input Process Store Output Lesson 1.1.1 What is a Computer? Input - whatever is typed, submitted, or transmitted to a computer system. Lesson 1.1.1 What is a Computer? Output - the result produced by a computer. Lesson 1.1.1 What is a Computer? CPU is a microprocessor, which is an electronic component that can be programmed to perform tasks based on data it receives. INTEL MICROPROCESSOR Lesson 1.1.1 What is a Computer? Processing-manipulation of data in many ways. Lesson 1.1.1 What is a Computer? Store-where computer stores data so that it will be available for processing. Memory-an area of a computer that temporarily holds data waiting to be processed, stored, or output. ROM RAM Lesson 1.1.1 What is a Computer? ROM (Read-Only Memory) - is a type of computer memory that stores permanent data and instructions for the device to start up. Lesson 1.1.1 What is a Computer? Random Access Memory (RAM) is a type of computer memory that is used to temporarily store data that the computer is currently using or processing. Lesson 1.1.1 What is a Computer? Lesson 1.1.1 What is a Computer? Storage-the area where data can be left on a permanent basis when it is not immediately needed for processing. Lesson 1.1. 2 Kinds of Software Application software a set of computer programs that helps a person carry out a task. Lesson 1.1. 2 Kinds of Software Examples of Application software Microsoft suite of products (Office, Excel, Word, PowerPoint, Outlook, etc.) Internet browsers like Firefox, Safari, and Chrome. Mobile pieces of software such as Pandora (for music appreciation), Skype (for real-time online communication), and Slack (for team collaboration) Lesson 1.1. 2 Kinds of Software System software helps the computer system monitor itself in order to function efficiently. Lesson 1.1. 2 Kinds of Software Examples of System Software include operating systems like macOS, GNU/Linux and Microsoft Windows, computational science software, game engines, industrial automation, and software as a service applications. Lesson 1.1.3 Computer Types The significant advantage of digitization is that things as diverse as books, movies, songs, conversations, documents, and photos can all be distilled down to a common set of signals that do not require separate devices. Mainframes Minicomputers Microcomputers Personal Computer Workstation Supercomputer Handheld devices computers Microcontrollers Lesson 1.1.3 Computer Types Mainframes- were housed in large, closet-sized metal frames. Lesson 1.1.3 Computer Types Minicomputers- were smaller, less expensive, and less powerful computers that were able, nevertheless, to provide adequate computing power for small businesses.. Lesson 1.1.3 Computer Types Microcomputers- were clearly differentiated from computers in other categories because their CPUs consisted of a single microprocessor chip. Lesson 1.1.3 Computer Types PC- is a micro-processor-based computing device designed to meet the computing needs of an individual. Lesson 1.1.3 Computer Types Workstation -resembles a desktop computer, but typically features more processing power and storage capacity. Lesson 1.1.3 Computer Types Handheld devices computers-these devices incorporate many computer characteristics. Lesson 1.1.3 Computer Types Microcontroller- is a special-purpose microprocessor that is built into the machine it controls and embedded in an appliance, vehicle, or other device.