3. a. List four scanning devices and explain how a scanning device works . By storing the document in a computer document became safe for longer period of time. Computers To search (stored data) automatically for specific data. Pros … Mouse is the most popular pointing device. Browse our product & service portfolio to find the right solution for your team. Worms can be transmitted via software vulnerabilities. (8 marks) ... original images is converted into binary number and sent to the computer. The Epson FastFoto FF-680W is a sheet-feed desktop scanner that excels at scanning stacks of snapshots while doing a credible job at document scanning. The document can be printed when needed. For example, using a pointing device you could point at and select an icon from a list of icons. Port scanning refers to the surveillance of computer ports, most often by hackers for malicious purposes. Darker portions of the target reflect less light and are given lower numbers. Heuristic based antivirus tools use a number of different scanning techniques, including: File analysis -- During file analysis, the scanning software will closely inspect a file to determine its purpose, destination and intent. If you're reading a timetable, say, you want specific information usually and so look for something that is convenient for your journey plans- when you do this, you are scanning . Many retail and grocery stores use some from of bar code reader to determine the item being sold and to retrieve the item price from a computer system. An input device converts incoming data and instructions into a pattern of electrical signals in binary code that are comprehensible to a digital computer. Introduction Computer being a versatile machine can process different types of data. Definition: Scanning a text is a reading technique where the reader looks for specific information rather than trying to absorb all the information. The code reader may be a … scanner (1) A synonym for antivirus program. Each device on a network is called a node, and various nodes can be connected physically through cables or wirelessly through radio frequencies.. Mouse. 1. a. A pointing device is an input interface (specifically a human interface device) that allows a user to input spatial (i.e., continuous and multi-dimensional) data to a computer. Once you get home, you can transfer the content to a computer. Network scanning is a procedure for identifying active devices on a network by employing a feature or features in the network protocol to signal devices and await a response. The scanner is powered by batteries and once you scan the text, the content is stored on the portable scanner. Biometrics refers to technologies used to detect and recognize human physical characteristics. ning, scans v.tr. It can replicate itself without any human interaction and does not need to attach itself to a software program in order to cause damage. Handheld Scanner A handheld scanner is a small manual scanning device which is moved over the object that needs to be scanned. An input device is a piece of hardware used to provide data to a computer used for interaction and control. Motorola Solutions has the tools you need to get the job done in any organization. Scanning is a technique used when a person tries to find a specific item such as a telephone number, a date, a time, etc. For instance a microphone can be used to input audio data in to a computer system. A network scanner is a software tool used for diagnostic and investigative purposes to find and categorize what devices are running on a network. To look at carefully or thoroughly, especially in search of something; examine: The sailor scanned the horizon for signs of land. ... SSL Meaning & Definition. 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