Consumer & Gadgets

New malware detection for Android at the source code level

There are numerous malware detection and antivirus apps for mobile devices running the Android operating system. However, a team in China introduces a new approach that can detect malicious activity at the source code level. ...

Security

Saudi Aramco facing $50M cyber extortion over leaked data

Saudi Arabia's state oil giant acknowledged Wednesday that leaked data from the company—files now apparently being used in a cyber-extortion attempt involving a $50 million ransom demand—likely came from one of its contractors.

Machine learning & AI

Scientists adopt deep learning for multi-object tracking

Computer vision has progressed much over the past decade and made its way into all sorts of relevant applications, both in academia and in our daily lives. There are, however, some tasks in this field that are still extremely ...

Robotics

Air-powered computer memory helps soft robot control movements

Engineers at UC Riverside have unveiled an air-powered computer memory that can be used to control soft robots. The innovation overcomes one of the biggest obstacles to advancing soft robotics: the fundamental mismatch between ...

Robotics

Neuro-evolutionary robotics: A gap between simulation and reality

Neuro-evolutionary robotics is an attractive approach to realize collective behaviors for swarms of robots. Despite the large number of studies that have been devoted to it and although many methods and ideas have been proposed, ...

Software

Avoiding probate with a smart contract

A recent graduate of SMU's Dedman School of Law has written computer language for a smart contract that, if adopted by courts, could make it much easier and less expensive for someone to sort out the estate of a loved one ...

Consumer & Gadgets

Encrypting photos on the cloud to keep them private

The past decade has witnessed scandal after scandal over private images maliciously or accidentally made public. A new study from computer scientists at Columbia Engineering reveals what may be the first way to encrypt personal ...

page 1 from 40

Computer

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