The brain is neither analog nor digital, but works using a signal processing paradigm that has some properties in common with both. Unlike a digital computer, the brain does not use binary logic or binary addressable memory, and it does not perform binary arithmetic.

Analog people see the world as a continuous stream of activities and events. Analog people go with the flow and tackle tasks one at a time. The analog person will rely on the phone or voice mail to make connections to the rest of the world.

We humans are biological animals. We have evolved over millions of years to function well in the environment, to survive. We are analog devices following biological modes of operation. We are compliant, flexible, tolerant.

The world we live in is analog. We are analog. Any inputs we can perceive are analog. For example, sounds are analog signals; they are continuous time and continuous value.

Some examples of sensors with analog outputs:

• Microphones.
• Photocells (light sensitive resistors)
• Temperature sensors.
• Force-sensitive resistors.
• Flex sensors.
• Thermistor (temperature sensitive resistor)
• Ultraviolet light sensor.
• Light sensors.

The company was founded by two MIT graduates, Ray Stata and Matthew Lorber in 1965. The same year, the company released its first product, the model 101 op amp, which was a hockey-puck sized module used in test and measurement equipment.

An analog signal is one that can take on any number of values, unlike a digital signal which has only two values: HIGH and LOW. To measure the value of analog signals, the Arduino has a built-in analog-to-digital converter (ADC). The ADC turns the analog voltage into a digital value.

In contrast to analog computers, digital machines work on numbers. Each variable is converted into numbers and each number into binary form, i.e. 0 and 1. It is this combination of 0 and 1 that does all the calculations. All modern computers, laptops, and calculators are all digital computers.

Over the past decade or so, though, the proportion of analog in an integrated-circuit design has been shrinking, until it now represents only about 20% to 25% of the design. …

If the signal is AM modulated, then any interference or noise is added directly to the signal… so it sounds like it has ‘static’ in it. FM = Frequency Modulation. This is still an analog modulation, but interference is far less likely to create frequency errors than amplitude errors.

Analog Voice Characteristics Analog is defined as a signal that has a continuously and smoothly varying amplitude or frequency. Zero to 4000 hertz is the pass band of a telephone system voice channel-a VF channel.

Analog communication plays a very vital role. Either in the form of AM,FM or PM. It is used in audio, video, telephony, wireless communication, radar, emergency services, etc.

Both analog and digital modulation use smoothly varying signals; the difference is that an analog-modulated signal is demodulated into an analog baseband waveform, whereas a digitally modulated signal consists of discrete modulation units, called symbols, that are interpreted as digital data.

An ordinary voice message, conveyed directly from a speaker to a hearer by pressure changes in the air, is an analog message because the pressure changes are continuous: the pressure varies smoothly up and down to create sound.