it is an DAC (Digital to analogue converter
digital
the digital signals frequency is infinite ,i.e ranges from 0.....infinity
Digital signals get corrupted by the noise, or overloa of information Overload of information, static in the air, etc
because they have more harmonics
A digital signal is actually a complex signal. Consider the horizontal part of a digital signal as a component with 0 frequency and the vertical part of the signal as the component of infinite frequency. Also, consider the change from the horizontal to vertical as all the frequencies. Then we can claim that a digital signal is complex signal with frequencies from 0 to infinite.A digital signal is a composite analog signal with an infinite bandwidth.
Digital signals are capable of carrying more information than analogue signals because digital signals make use of the bandwidth more efficiently by closely approximating the original analogue..
Bandwidth:- It is one characteristics that measures network performance is bandwidth. Bandwidth can be measured in two values:- 1. IN HERTZ 2. IN BITS/SEC. Bit Rate:- It is used to describes digital signals. the bit rate is the no of bits sent in 1s
according to my view, to deal with digital signal is more easy then that of analog. and it also stable so many of the semiconductor circuits run only on dc signals...... i think doubt is clear now....
Measurement of the capacity of a communications signal. For digital signals, the bandwidth is the data speed or rate, measured in bits per second (bps). For analog signals, it is the difference between the highest and lowest frequency components, measured in hertz (cycles per second). For example, a modem with a bandwidth of 56 kilobits per second (Kbps) can transmit a maximum of about 56,000 bits of digital data in one second. The human voice, which produces analog sound waves, has a typical bandwidth of three kilohertz between the highest and lowest frequency sounds it can generate.
In reality, digital TV doesn't have extra bandwidth. It uses the same (or a little less) amount of bandwidth as standard NTSC television signal, but since it's digital in nature, they are able to multiplex up to eight TV signals within the same amount of transponder space. So yes, it can broadcast more channels.
hi, actually non-continuous signals is one of a characteristics which define a Digital Signal.#non-continuous means having a finite or countably infinite number of values, which is exactly a defining property of a digital signal. therefor its not right (wrong) to ask the difference between the two.hope it help. :)
Older TV sets use analog signals. In February, all TV signals that are now analog will become digital because it gives more efficient use of the bandwidth. Analog sets will not receive and interpret the images from a digital transmission. It's the same reason you can't use your old TV as a computer monitor.
Every line has an upper limit and a lower limit on the frequency of signals it can carry. This limited range is called the bandwidth. The signals ranging within the upper limit & lower limit are called bandwidth signals.
The bandwidth of light signals refers to the range of frequencies or wavelengths over which the signal can be transmitted. This bandwidth determines the amount of data that can be transferred over the optical communication system. A wider bandwidth allows for higher data transmission rates.
yes RG6 should be used exclusively for satellite hookups and digital CATV. RG59 is fine for analog CATV signals but will not support the higher bandwidth used for satellite signals.
digital signals have two values. 0 and 1.