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Why must sound and video input to a PC be converted from analog to digital?
Because in order to preserve the original sound, a digital sampling rate must be twice the frequency of the analog signalAnalog data is smooth and continuous, where as digital data, such as the binary data used in computers, has distinct gradations. The process of producing digital data by measuring data at a series of representative points is called sampling.
What are the ten differences between analog and digital computer?
The difference between an analog and digitialcomputer is the type of data they process. Analog computers process measured data. A speedometer in your car is a common type of analog device. A digital computer processed descrete data (digits). In this case 0 and 1. Digital computers are most common. PC's, MAC's are digital computers. A big difference is an analog computer's output can vary even if the input is identical. A digital computer can be very precise. For instance, a gas pump might tell you that you pumped in 5 gallons of gas but you could have gotten 4.99 gallons or 5.01 gallons. If you asked a digital computer to add 5 and 6 together, you will always get 11. By the way. A gas pump is actually a hybrid computer. Although it processes measured data, that is how much fluid has passed through the gas hose, the data displayed to you, the amount of gas and how much you owe is in a digital format.
How is the direction of data flow different for data transfers for MP3 players and digital cameras?
MP3 files are downloaded from the PC to the MP3 player, in contrast to a digital camera, which transfers or uploads data to the PC.
What are the advantages of digital communications over analog communication?
Using analogue communication from a digital interface requires some kind of converter to convert your digital data into analogue before it can be sent. This data needs to be converted back into digital by the receiver. Hence a larger amount of work needs to be done. eg: the VGA cable used to connect a PC to a screen is a analogue cable. So all the video signals that are sent out by your PC are converted to analogue first. Hence there is a larger amount of work done. There is also a chance of data being lost during this conversion. If the source signal and the output signal are digital, then there is no conversion required and resulting work required is less. This also means that the receiver doesn't need to convert this data. Hence work done is less and data loss in conversion is also minimal. Although transmitting digital data over long distances also results in some amount of loss. eg: video signals transmitted through DVI or HDMI cables are purely digital. A PC or Blu-Ray player connected to a digital screen using any of the above interfaces doesn't need to convert the signal before sending it. Hence data loss is minimal and resulting picture is sharper and accurate.
7 Why must sound and video input into a PC be converted from analog to digital?
A computer only reads information in digital coding (binary) a truly analog signal would not register in a computer.
Example of digital computer?
analog computer examples
What are the differences between digital and analog computer?
Digital Computers works on digits like-0 and 1 .Analog Computers works in continuous variable .Input source for these computer should be Analogu. example thermometer,speedometer, ammeter.They are mainly used in scientific,research field and medical fieldAnalog computers (there are still some out there) use linear combinations of voltage amplitude (or currents or frequencies or phases) from the inputs to determine the required output sequence; digital computers use two-state variables that are either "on" or "off" (true or false, 1 or 0, yes or no) as logical building blocks to derive a digital output sequence from the digitized input. Digital signals may also be converted to analog, and vice versa, so you could have a series of a/d converters, a digital computer, and d/a converters to simulate an analog computer, or a communication channel, as in digital telephones.Answer--The difference between an analog and digitial computer is the type of data they process. Analog computers process measured data. A speedometer in your car is a common type of analog device. A digital computer processed descrete data (digits). In this case 0 and 1. Digital computers are most common. PC's, MAC's are digital computers. A big difference is an analog computer's output can vary even if the input is identical. A digital computer can be very precise. For instance, a gas pump might tell you that you pumped in 5 gallons of gas but you could have gotten 4.99 gallons or 5.01 gallons. If you asked a digital computer to add 5 and 6 together, you will always get 11. By the way. A gas pump is actually a hybrid computer. Although it processes measured data, that is how much fluid has passed through the gas hose, the data displayed to you, the amount of gas and how much you owe is in a digital format. An Analog computer uses continuous variables for mathematical operations and utilizes mechanical or electrical energy.The difference between an analog and digitial computer is the type of data they process. Analog computers process measured data. A speedometer in your car is a common type of analog device. A digital computer processed descrete data (digits). In this case 0 and 1. Digital computers are most common. PC's, MAC's are digital computers. A big difference is an analog computer's output can vary even if the input is identical. A digital computer can be very precise. For instance, a gas pump might tell you that you pumped in 5 gallons of gas but you could have gotten 4.99 gallons or 5.01 gallons. If you asked a digital computer to add 5 and 6 together, you will always get 11. By the way. A gas pump is actually a hybrid computer. Although it processes measured data, that is how much fluid has passed through the gas hose, the data displayed to you, the amount of gas and how much you owe is in a digital format.An Analog computer uses continuous variables for mathematical operations and utilizes mechanical or electrical energy.Analog computers, also called continuous computers, calculate smoothly changing variables using direct analog representations of those variables (e.g. 1V per 1000 gallons of water).Digital computers jump suddenly at intervals from one coded value of a variable to another. Most modern digital computers use binary codes to represent these values: whether the values are integer numbers, real numbers, symbolic characters, etc. The exact binary representation of each data type is coded differently. Values between defined codes for a given type cannot be represented on a digital computer.
How is data transmitted from the PC to the printer is data in the printer cable in analog or digital format?
When audio signals are detected by your computer's microphone, an analog (or continuous) electrical signal is generated. Computers work with digital data, so...there is a device the displays it, stores it on disk, mixes it, or does a multitude of other things. This hardware capability is usually built-in to a computer or is a part of a sound card while the program is usually something like a Windows' Sound Recorder, audacity, etc.
What is the left analog stick in PC?
The left analog stick in the PC is the analog stick that is located to the left...
14 How is the direction of data flow different for data transfers for MP3 players and digital cameras?
The direction of data flow for data transfers are different by these to reasons MP3 files are downloaded from the PC to the MP3 player, in contrast to digital cameras, which transfers or uploads to the PC.
What portion of the telephone network still depends on analog signals?
Analog data transmissions occurs every time you log onto the internet using your pc, your modem, and your telephone line.
What are functions of a sound card?
The sound card functions by converting digital data into analog information. It also converts analog data into digital data. The digital signal processor inside of the sound card is responsible for this.
