- •Computer Basics
- •Applications: Word Processing
- •Word Processing
- •Steps to produce a document
- •Features/Terms:
- •Do it! Simple Text
- •Directions:
- •Move the cursor:
- •Features/Terms:
- •Features/Terms:
- •Applications: Desktop Publishing
- •Features/Terms:
- •Instant Messaging
- •Applications: Security & Utility
- •Security Programs
- •Types of security programs:
- •Utility Programs
- •Examples:
- •Integrated Software
- •Computer Types & Applications: Summary
- •Input: Intro
- •Types of Input
- •Keyboard
- •Common differences:
- •Input: Keyboard
- •Explanation:
- •Input: Pointing Devices
- •Input: Terminals
- •Input: Multimedia
- •Voice Input
- •Input: Data Automation
- •Input: Data Accuracy
- •Input: Summary
- •Input: Quiz
- •Processing: cpu
- •Explanation:
- •Processing: Motherboard
- •Processing: Summary
- •Output: Printer Types
- •Impact Printers
- •Types of Impact Printers
- •Types of Non-Impact Printers
- •Thus, Things to Consider When Choosing a Printer:
- •Output: Summary
- •Storage: Accessing Data
- •Total time to transfer a kilobyte:
- •Don't lose it!
- •Storage: Caring for Data
- •What are the risks?
- •First: a Back Up Plan
- •Storage: Summary
- •Computer to Computer: Transmission Media
- •Broadcast
- •Computer to Computer: Modems Signals
- •Transmission Rate
- •Physical Types
- •Digital Modems
- •Types of Digital Modems
- •How Device Speeds Compare
- •Protocols
- •Computer to Computer: Summary
- •System Software: Types
- •More Terms
- •Common Operating Systems for Desktop Computers
- •Life Cycle
- •Which is most popular?
- •Wikipedia:
- •Hitslink.Com:
- •System Software: Utilities
- •Security Software
- •Malware: What you need protection from
- •Programs that add protection:
- •Programming: Summary
- •What You See: On the Front
- •Explanation:
- •What You See: Summary
Input: Terminals
A terminal consists of a keyboard and a screen so it can be considered an input device, especially some of the specialized types.
Some come as single units.
Terminals are also called:
Display Terminals
Video Display Terminals or VDT
A dumb terminal or thin client has little or no ability to process or store data. It is linked to minicomputer, mainframe, or super computer, which handles all the hard work. The keyboard and viewing screen may be a single piece of equipment. The development of faster, smaller, cheaper computers did away with most uses for dumb terminals. But the trend is reversing somewhat with thin clients that are used with programs in the cloud. The documents are stored over the Internet and the programs that create and edit those documents are run from a browser. |
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An intelligent, smart, or programmable terminal can process or store on its own, at least to a limited extent. PCs can be used as smart terminals. |
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A point-of-sale terminal (POS) is an example of a special purpose terminal. These have replaced the old cash registers in nearly all retail stores. They can update inventory while calculating the sale. They often have special purpose keys. For example, many restaurants have separate touchpads for each food item available. Other Devices for Input Credit card readers, fingerprint scanners, and the like are special purpose devices that send data to a computer for recognition. |
Input: Multimedia
Multimedia is a combination of sound and images with text and graphics. This would include movies, animations, music, people talking, sound effects like the roar of a crowd and smashing glass.
Sound Input
Copyright (c) 123RF Stock Photos
Recording sounds for your computer requires special equipment. Microphones can capture sounds from the air which is good for sound effects or voices. For music the best results come from using a musical instrument that is connected directly to the computer. Software can combine music recorded at different times. You could be a music group all by yourself - singing and playing all the parts!
Voice Input
Voice input systems are now available at the local retail level plus being built into mobile devices like phones and tablets. If you have a choice of programs, you must be careful to get the right system or you'll be very disappointed.
Decide first what you want to do since a voice input program may not do all of these:
Data entry - |
Talking data into the computer when your hands and eyes are busy should certainly be more efficient. You'd have to be very careful about your pronunciation! |
Command and control - |
Telling the computer what to do instead of typing commands, like saying "Save file". Be careful here, too. The dictionary of understood words does not include some of the more "forceful" ones. |
Speaker recognition - |
Security measures can require you to speak a special phrase. The computer must recognize your voice to let you in. |
Speech to text - |
Translating spoken words direct to type would suit some authors just fine. You'd have to watch out for those "difficult to translate" phrases like "hmmm" and "ah, well, ... ummm." |
A number of companies are now using speech recognition in their telephone systems. For example to find out what your bank account balance is, instead of punching in your account number on the phone keypad and choosing option 3 for current balance, you could speak your account number and say "Current balance". The computer will even talk back and tell you what it thinks you said so you can make corrections. Wow!
How do they change voice to data?? |
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Types of Voice Recognition Systems |
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Video Input A digital camera takes still photos but records the pictures on memory cards. The information contained can be uploaded to a computer for viewing. Many cell phones include a camera. Some have two, one to take a picture of your face and one to show what you are looking at. A camcorder records moving pictures that can be uploaded to the computer. Both of these video formats take huge amounts of storage. A web cam is a tiny video camera designed especially to sit on your computer. Some laptops have one built into the case. It feeds pictures directly to the computer. Of course you are limited by the length of the cable that connects the camera to the computer. But like any camera, it will take a picture of what you point it at! So what do people do with a web cam? They use it for video conferencing over the Internet or Skype video phone calls. They show the world what's going on outside their window (weather, traffic). They take digital pictures and make movies of family, pets, snow storms, birthday parties, whatever. |