INPUT AND OUTPUT DEVICES
In computing, input/output, or I/O, refers to the communication between an information processing system (such as a computer), and the outside world possibly a human, or another information processing system. Inputs are the signals or data received by the system, and outputs are the signals or data sent from it. The term can also be used as part of an action; to "perform I/O" is to perform an input or output operation. I/O devices are used by a person (or other system) to communicate with a computer. For instance, a keyboard or a mouse may be an input device for a computer, while monitors and printers are considered output devices for a computer. Devices for communication between computers, such as modems and
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Disadvantages of using a mouse include
_ It is not easy and convenient to input text with a mouse.
_ Issuing commands by using a mouse is slower than by using a keyboard. _ A mouse is not accurate enough for drawings that require high precision. _ A mouse usually requires a flat surface to operate.
_ A mouse needs more desk space to operate when compared with a trackball. Trackball
A trackball is a stationary pointing device with a ball mechanism on its top.
Advantages of a trackball include
_ A trackball is good for limited desk space because the user does not have to move the entire device.
Disadvantages of trackball include
_ A trackball is usually not as accurate as a mouse.
_ The ball mechanism of trackballs also requires more frequent cleaning than a mouse.
Touchpad
Is a small pressure- and motion-sensitive area on a portable computer that you can use to move the mouse pointer. When you move your finger across the pad, the mouse pointer on the screen moves in the same direction. A touch pad is an alternative to a mouse.
Advantages of a touch pad include
_ Easy and Fast one finger control.
_ Ideal for portable devices
Disadvantages of using a touchpad include
_ Expensive & found in specific devices e.g. laptops
Touchscreen
A touch screen is an input/output touch-sensitive display.
Touch screens are often used for information kiosks located in department stores, hotels, airports, and museums. Touch screens are also used for ATM machines to
I/O is the control part that manages data communication. It delivers information to appropriate determination. It also enforces access with TPM functional components. It takes charge of communication between TPM and hardware outside on the trusted computing platform.
An interrupt is used in a hardware context i.e., can be used to signal the completion of an I/O to obviate the need for device
BIOS (Basic Input Output System): BIOS set up the computer and boot the operating system it also handles the system setup process including driver loading.
a. You input information perhaps via a keyboard or mouse to the computer and you receive output via a monitor or printer or some such device
Mouse is an input and pointing device that allows the user to control the graphical user interface. Keyboard is an input device that allows the user to input data and give commands to the operating system by typing. Commonly, a keyboard contains all the alphabetical letters, numbers from 1 to 9 and punctuation
Input: An input is when a computer receives data from external hardware such as a mouse, keyboard
The _________ is a term for the device or unit that receives the information transfer.
2. Which of the following is an example of the hardware component of an information system?
Experimentation - An experimental photography technique can be defined as anything that we use to change a photography in a way that differs from just taking a photograph. It is a mean of depicting a visual image that does not have an
The criminal creates a suspicion of weakness and in the first stage tests this suspicion by testing limits, bending rules, or asking for contraband items. They will attempt to engage staff in more intimate conversations or test the employee’s level of tolerance which are good ways to test your professionalism.
In order to replace human senses, computers needed input devices for perception and data entry.
- The third step: You need to establish a list of your employees on the system. You need to fill in employee’s name, address of employees, tax information such as Tax File Number (TFN) and etc.
Information and communication technology is a term that incorporates devices or applications in which we use and manipulate. Such devices include, but are not limited to, the internet, television, social media, blogs and microblogs, software and hardware, cell phones, Web 2.0, or any other technology that can be used
In order to store something in the main memory, it must first be input through the keyboard or mouse or other input device. A keyboard is designed to enter text, numbers, or punctuation. It is the main input device on most PC’s. The mouse is a pointing device used to select, point, and click on a computer screen. The keyboard and mouse are used to send information to the CPU. This information is translated through other devices called output devices such as the monitor. This
Identify and describe the six components of an information system. Which are most directly affected by the study of computer security? Which are most commonly associated with its study?