Quantum computing is the use of quantum computer systems, which use quantum bits, or qubits, rather than binary digits, or bits. Quantum computers solve problems much faster than digital computers. As of 2014, quantum computing is very new and has only been successfully executed with very few qubits.Know More
Traditional digital computers encode data in binary digits, which exist as either zeros or ones. Quantum computers are not limited to just zeros or ones because qubits can exist in all possible states at a sub-atomic level. Quantum computers use this superposition principle to perform tasks incredibly rapidly.
A quantum computer is capable of performing one million computations simultaneously, as opposed to one performed by a traditional digital computer, as of 2014. A quantum computer running at 30 qubits has the same processing power as a digital computer that runs at 10 teraflops. This means it run at trillions of floating-point operations in just one second, as opposed to a typical computer in 2014, which runs on billions of floating-point operations every second.
Because looking at sub-atomic particles can compromise their value, scientists need to figure out how to monitor qubits indirectly. This may be possible through quantum entanglement, which occurs when separate particles react the same to outside stimulus. This allows scientists to observe the tangled particle to see what one particle is doing.Learn more about Computer History
Computers are powerful tools because they can process information with incredible speed, accuracy and dependability. They can efficiently perform input, process, output and storage operations, and they can store massive amounts of data.Full Answer >
Steve Jobs named his company Apple because his biggest competitor at the time was Atari, and he wanted to be ahead of Atari alphabetically in the phone book. Ironically, neither Atari nor the phone book is used much these days.Full Answer >
According to a 1986 contest held by Boston's Computer Museum, the first true computer was the Kenbak-1, designed by John Blankenbaker in 1971. The Kenbak-1 is considered the first personal computer, although it had no microprocessor and used small- and medium-scale integrated circuits.Full Answer >
The first computer was invented by Charles Babbage in 1838. He developed a mechanical calculator that had a simple storage mechanism and called it the Difference Engine. The device used punch cards to input instructions to the device steam engine as its source of power.Full Answer >