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What device converts text or images on an original document into digital data that can be stored and processed by a computer?
bitmap
How much data is used to represent a single color channel in digital images?
In digital images, each color channel uses 8 bits of data to represent a single color, resulting in a total of 24 bits for three color channels (red, green, blue).
Does A digital signal consists of a continuous electrical wave?
Digital signals are virtually always transmitted using a continuous (analog) waveform. Even a signal that is called "digital" is actually analog in practice. When a digital signal is transmitted over short range (inside an integrated circuit, on a computer motherboard, etc.) we talk about it being digital, but inspection of the actual waveform with an oscilloscope will reveal that it is not just two different voltage levels. But it is "mostly digital" and can be treated as such by circuit elements that are expecting digital signals. That is, we call it a "digital signal" but it isn't perfectly digital (two different values). It is actually theoretically impossible to transmit a pure digital signal. Doing so would require an infinite energy pulse to create the step functions. In practice, the limiter to making a signal that is almost perfectly digital tends to be the "load" and the transmission channel, which both have resistance, capacitance and inductance that make even a very abrupt signal smooth out a little. When digital signals are transmitted over relatively long distances, they are sometimes deliberately "encoded" onto an analog carrier. There are various methods for doing this, such as frequency modulation, amplitude modulation, phase modulation, or combinations. There can even be multiple layers of encoding to implement features such as error detection and error correction. So if you were to inspect the signal that is transmitted, you would see an obvious analog signal, but the information that is hidden in it is an encoded digital signal that will be re-formed at the receiver.
What is digitizer in computer graphics?
Digitizer converts analog or physical input into digital images. This makes them related to both scanners.
Why is digital technology preferred to analog technology in communications technology?
Why digital communications and what its advantages over analog communication ,first you have to know what is the difference between analog signal and digital signal. Analog signal analog signal is continuous time signal i.e. it has a value at any moment of time and it has infinite number of valus , such as dinusoidal signal ,you can substitute X with any value and you will have an value in Y in the follwing sin relation Y=sin(X). 1-Noise and destortion immunity:-when analog signal is transmitted in free space for long distances it will be distorted and no an ideal recovery done in receiver to recover the exact signal which transmitted ,but in digital communication digital signal consist of 2 levels only zero or one (not like the analog one , it has infinite numbers of values or levels at each period of time),so digital signal can be recovered easily and excactly like transmitted one. Hint : Device that used to pattially recover the analog signal after a certain distance is called repeater ,from its name it receives transmitted analog signal and filter it and amplify it and transmitt it),but in digital transmission it is different ,the device used for recovering digital signal which transmitted from acertain distance is called regenerative repeaters ,it receives transmitted digital signal and recover it to regenrate a new exact signal like received one then retransmitt it for further distance. 2-More privacy and security due to encryption. 3-Error detection techniques can be used and correction as well. 4-Easy for processing and applying multiplexing techniques. 5-Low cost. 6-Transmission rate can be changed easily. 7-Digital hardware implementation is flexible and permits the use of micrprocessors, digital switching elements and layer scale. Thanks for reading H.M.S
What is the advantage of jpeg?
JPEG images (jpeg, jpg) use compression formats to reduce the data file size for digital images. While this causes a loss of image quality, it enables images to be more efficiently stored and transmitted.
What is the conversion of letters sounds and images into electrical signals called?
The conversion of letters, sounds, and images into electrical signals is called digital encoding. This process essentially translates analog data into a digital format that can be easily transmitted and processed by electronic devices.
How information is transmitted?
by analog to digital,digital to analog signal
What are the different sources of digital images?
Photographs and artwork are the initial sources of any images, including digital.
What is noise suppression in digital image processing?
removing noise from digital images. Noise is random color pixels which appears at digital images.
How is FM transmitted?
the digital signal is converted to analog signal after using by transmitted antenna
What does digital format mean?
Digital format refers to the way information is encoded in a digital system, allowing it to be stored, processed, and transmitted electronically. This can include text, images, audio, and video converted into binary code (0s and 1s) that computers can understand. Digital formats enable efficient sharing and manipulation of data across various devices and platforms. Common examples include JPEG for images, MP3 for audio, and PDF for documents.
What devices are used for creating and editing graphic images?
For example digital computers to edit images, (digital) cameras to obtain images or computers to render them.
Why you change your analog signal into digital?
Analog is changed in to digital so it can be transmitted easily.
What is the definition of digital camera?
A Digital Camera Stores Images in a Digital Format unlike older cameras which used to store images on a film or metal plate...
digital media?
Digital media refers to any form of media content that is stored and transmitted in digital format. It encompasses a wide range of digital technologies, platforms, and devices used for creating, distributing, and consuming various types of content, including text, images, audio, video, and interactive elements.
What is the standard photo ratio used for most digital images?
The standard photo ratio used for most digital images is 3:2.
