Fingertip towels are towels that have gone through the process of shearing on one or both sides of the terry towel. Generally it is also know as velour. Towel Hub carries fingertip towels in many colors at wholesale prices. We offer smaller quantities such as starting from 1 dozen fingertip towels to as many as you like at wholesale rates.
analog signal. Signals that represent a range of frequencies, such as the human voice. They are a continuous electronic wave signal as opposed to a digital signal that is either on or off. To convert the digital signals of your computer to analog and vice versa, you need a modem. Another cable connects the modem to the telephone wall jack.
Digital Data/Analog Signals Must convert digital data to analog signal. One such device is a modem to translate between bit-serial and modulated carrier signals. To send digital data using analog technology, the sender generates a carrier signal at some continuous tone (e.g. 1-2 kHz in phone circuits) that looks like a sine wave. The following techniques are used to encode digital data into analog signals (Fig 2-18) Resulting bandwidth is centered on the carrier frequency. amplitude-shift modulation (keying): vary the amplitude (e.g. voltage) of the signal. Used to transmit digital data over optical ber. frequency-shift modulation: two (or more tones) are used, which are near the carrier frequency.