Final answer:
Objects that contain analog signals can vary continuously and include continuous signals like sound or visual images, unlike digital signals represented in binary code. Analog devices, such as vinyl records or old radios, deal with natural fluctuations, whereas digital electronics like computers use binary data processed by integrated circuits.
Step-by-step explanation:
Objects that contain analog signals can vary continuously in terms of the data they represent. These include continuous signals such as the intensity values of sound or visual images. In contrast to digital signals, which represent data in binary code (ones and zeroes), analog signals are not discrete but fluctuate in a continuous range of values. Devices such as vinyl records, magnetic tape audio systems, traditional broadcast TV, and radio signals before digital conversion use analog signals. A good example of an analog device is a thermometer because the temperature reading changes fluidly as opposed to a digital thermometer that shows discrete numerical values.
Digital signals, on the other hand, use a series of binary ones and zeroes to transmit and process data. Digital signals are prevalent in modern technology like computers and smartphones. These signals involve processing by integrated circuits made of vast networks of transistors that manage digital data by switching on and off, representing the binary code.
When natural analog signals need to be used in electronic devices, an analog to digital converter is often employed to translate continuous signals into digital signals by setting certain voltage cut-off values.