Security
Quantum computers that are exponentially faster than any of our current classical computers and are capable of code-breaking applications could be available in 12 to 15 years, posing major risks to the security of current ...
23 hours ago
0
5
Software
McGill researchers are turning to video games to harness the power of citizen scientists in order to map the gut microbiome.
Apr 08, 2020
0
5
Internet
Researchers around the world are working at unprecedented speed and scale to understand the coronavirus, develop a vaccine and discover new drugs to treat COVID-19.
Apr 08, 2020
0
0
Engineering
Frustrated with spotty WiFi connection? Engineers at the University of California San Diego have developed a "smart surface" that could make signal available in dead spots—and also make the existing connection twice as ...
Apr 03, 2020
0
266
Computer Sciences
In order to better solve complex challenges at the dawn of the third decade of the 21st century, Alphabet Inc. has tapped into relics dating to the 1980s: video games.
Apr 03, 2020 report
1
71
Software
Researchers at a company called Bleeping Computer have exposed another security flaw with the conferencing application Zoom—one that allows hackers to steal user passwords. The vulnerability in the software application ...
Apr 02, 2020 report
0
141
Computer Sciences
Normally, it takes pricey equipment and expertise to create an accurate 3-D reconstruction of someone's face that's realistic and doesn't look creepy. Now, Carnegie Mellon University researchers have pulled off the feat using ...
Apr 01, 2020
0
59
Security
As the COVID-19 pandemic continues to impact countless aspects of everyday life, CyLab researchers are monitoring its effects on people's cybersecurity and privacy.
Apr 01, 2020
0
16
Security
While most of the world is trying to deal with the COVID-19 pandemic, it seems hackers are not on lockdown. Cyber criminals are trying to leverage the emergency by sending out "phishing" attacks that lure internet users to ...
Apr 01, 2020
0
16
Electronics & Semiconductors
Skyrmions are ultra-stable atomic objects first discovered in real materials in 2009, which have more recently also been found also to exist at room temperatures. These unique objects have a number of desirable properties, ...
Mar 31, 2020 feature
1
443
A computer is a machine that manipulates data according to a set of instructions.
Although mechanical examples of computers have existed through much of recorded human history, the first electronic computers were developed in the mid-20th century (1940–1945). These were the size of a large room, consuming as much power as several hundred modern personal computers (PCs). Modern computers based on integrated circuits are millions to billions of times more capable than the early machines, and occupy a fraction of the space. Simple computers are small enough to fit into a wristwatch, and can be powered by a watch battery. Personal computers in their various forms are icons of the Information Age and are what most people think of as "computers". The embedded computers found in many devices from MP3 players to fighter aircraft and from toys to industrial robots are however the most numerous.
The ability to store and execute lists of instructions called programs makes computers extremely versatile, distinguishing them from calculators. The Church–Turing thesis is a mathematical statement of this versatility: any computer with a certain minimum capability is, in principle, capable of performing the same tasks that any other computer can perform. Therefore computers ranging from a mobile phone to a supercomputer are all able to perform the same computational tasks, given enough time and storage capacity.
This text uses material from Wikipedia, licensed under CC BY-SA
