Analog & Digital

By- Ellie Madsen

Examples of analog technology

Examples of analog technology is human voice, vinyl records, and cassette tapes. The human voice is analog because the signal has a continuously and smoothly changing amplitide or frequency. When a human voice is recorded and played, we hear the original waveforms in original form without alter. A vinyl record is a circle disk longer than the size of a cd. The vinyl record is placed unto a turn table and a needle reads the grooves. A vinyl record makes rich sound but isn't perfect due to the fact that the needle occasionally skips a groove which skips some music. Analog technology looses audible value over time, making vinyl records analog. The cassette tape is able to play music stored on magnetic tape, tracks recorded on each side of magnetic tape. The cassette tape is placed into machine and the playback head pushed against tape creating electromagnet pulse. A cassette is analog because signals are recorded in original form and aren't changed in binary code.

Examples of digital technology

Examples of digital technology are computers, cds, and mp3 players.

Computers are digital devices because they are a device that is able to process data that is in discrete from. Computers are able to analyze the data in discrete form by counting. comparing, and manipulation of these 1's and 0"s. Cds are digital technology because they can store music, data, or computer software. A cd has a spiral track that starts in the middle of the cd. The track also has very small bumps which store data, the data in binary code. A mp3 player requires digital technology to store and play music files. The common tie with all of digital technology is all are in binary code.

Differences between analog and digital signals

There are many differences between analog and digital signals. A difference between the two signals is the waves, the waves of the two signals are shaped differently. A digital wave looks square, discrete, and like steps. An analog wave is smooth, repetitive, and curvy (more rectangular instead of straight lines) . The waves appear as almost opposites. In order to show waves in a time versus voltage analog wave the wave should be continuous and smooth. To show a digital wave a time graph would show square waves. Analog waves have a infinite number of possible values within a range of maximum and minimum values. Digital waves have a finite number of possible values.
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Differences between analog and digital technology

The technology of analog and digital is very different overall. Digital takes waveforms and changes them into a limited set of numbers and records waveforms. The limited set of numbers is known as binary code and includes only 1 and 0. Analog technology records waveforms as they are without changing them into a different form. Another difference is that analog and digital are best suited for different technology. Analog is best suited for audio and video transmission. Digital is best suited for competing and digital electronics. Analog technology and vinyl records have grooves ingrained into them each tied with different frequencies. A digital device has music in binary code with bunch of numbers that is heard as music because the code matches music.

Analog or Digital ?

There is no scientific way to prove whether analog or digital is better. There are pros and cons to both sides of the argument as to which is better. A con about analog is some of the technology is outdated, such as cassette tapes. Most people simply don't own cassette players. Walking into a store you're more likely to find digital technology such as cds and cd players rather than cassette tapes and a cassette player. A cassette player on amazon ranges from the price of 11 dollars to 200 dollars. A single cassette tape costs 1.17 dollars. More people will have a cd player which is digital technology. A cd player on amazon costs from the range of 15 to 50 dollars. A single cd costs .17 cents. Since a player is a one time buy then that makes digital cheaper overall since the player and the device are both cheaper compared to analog. Analog prices range higher and the audible value decreases over time making them worth less. Analog technology such as vinyl record eventually get scratches and these starches cause music to skip. Digital in stored in binary code and doesn't loose value over time. Digital is more preferred over analog.