Vacuum tubes were originally used in the earliest digital electronic computers back in the 1930s and 1940s, before being replaced by
transistors composed of semiconductors
, which can can be manufactured much smaller, making today's computers, smartphones, and tablets possible.
What was the vacuum tube replaced with in the second generation?
The correct answer is
Transistors
. Vacuum Tubes were replaced by Transistors. The second-generation computers emerged with the development of Transistors. The transistor was invented in 1947 by three scientists J.
What replaced the vacuum tube in 1948?
Bell Labs publicly announced
the first transistor
at a press conference in New York on June 30, 1948. The transistor went on to replace bulky vacuum tubes and mechanical relays. The invention revolutionized the world of electronics and became the basic building block upon which all modern computer technology rests.
What were vacuum tubes replaced with and during what generation?
2nd Generation
. Transistors replace vacuum tubes and ushered in the second generation of computers. The transistor was invented in 1947 but did not see widespread use in computers until the late 1950's.
Why did vacuum tube need to be replaced?
In the 1950s,
the transistor
started to replace the vacuum tube as vacuum tubes were larger in size, fragile like a light bulb, and expensive. … As computing devices started to become smaller in size, transistors were more ideal to use due to their smaller size as well.
Why are vacuum tubes so expensive?
Tube amps are expensive
because they adopt pre and power tubes as their primary amplification source
. Each tube costs roughly $50 and can have up to 4 of them within a single unit. Secondly, these amps have more expensive components, larger cases, and more complex circuitry than solid-state amps.
Are vacuum tubes still used today?
1990s-Today –
Vacuum tubes are still used today
. Musicians still use tube amplifiers and claim they produce a different and desirable sound compared to solid state amplifiers.
What was the main disadvantage of vacuum tube?
They produced heat and often burned out
.
What is the drawback of vacuum tubes?
Vacuum Tubes: Disadvantages
Bulky, hence less suitable for portable products. Higher operating voltages generally required
. High power consumption; needs heater supply that generates waste heat and yields lower efficiency, notably for small-signal circuits. Glass tubes are fragile, compared to metal transistors.
What was faster more reliable smaller and much cheaper to build than a vacuum tube?
Answer:
The transistor
was faster, more reliable, smaller, and much cheaper to build than a vacuum tube. … They were also much smaller and gave off virtually no heat compared to vacuum tubes.
What replaced vacuum tubes in computers?
Vacuum tubes were originally used in the earliest digital electronic computers back in the 1930s and 1940s, before being replaced by
transistors
composed of semiconductors, which can can be manufactured much smaller, making today's computers, smartphones, and tablets possible.
Why do vacuum tubes glow blue?
Blue Glow – We often get asked if blue glow inside of a vacuum tube is a sign of a defect. Thankfully, it is rarely a sign of a defect at all. … It is most pronounced on power tubes and is
the product of electron bombardment of the glass taking place within the tube
.
What are the 6 generations of computer?
- First generation (1940 – 1956)
- Second generation (1956 – 1963)
- Third generation (1964 – 1971)
- Fourth generation (1972 – 2010)
- Fifth generation (2010 to present)
- Sixth generation (future generations)
How long should a vacuum tube last?
Depending on how often you turn on and turn off your gear, but tubes should last
about 5,000 to 10,000 hours
. For most people, they only need to be replaced every 2-3 years at most.
How do I know when my tubes need replacing?
- Excessive noise (hiss, hum) including squealing or microphonic tubes.
- Loss of high end. …
- A muddy bottom end; Sounds like there is too much bass and note clarity is lost.
- Erratic changes in the overall volume. …
- The amp doesn't work!
Did transistors replace tubes?
The invention of the transistor was one of the most important developments leading to the personal computer revolution. … The transistor, which essentially functions as a solid-state electronic switch,
replaced the less-suitable vacuum tube
.
