UPDATED TECHNOLOGY: COMPUTING AND COMMUNICATION

Eavesdropping Antennas Can Steal Your Smart Phone's Secrets

03.05.2012
By Tom Simonite
2 Comments

The processors in smart phones and tablets leak radio signals that betray the encryption keys used to protect sensitive data.

Windows 8: Microsoft Gambles on a Tablet-centric Future

03.02.2012
By Will Knight
14 Comments

Does it make sense to merge a conventional desktop interface with one optimized for touch?

Defense Department Wants More Control over the Internet

02.29.2012
By Tom Simonite
28 Comments

The U.S. government says it must govern Internet technology more closely to protect against cyberattacks.

Briefings

Technology Review's primers on key emerging technologies.

Social Networks

These online communities are redefining how we find and share information, but will operators be able to assuage privacy concerns?

Why Only Designers Can Create New Programming Languages

By Christopher Mims
3/6/12
11 Comments

Attempts to verify the utility of languages stifle innovation.

Seven Computer Security Fears to Shape 2012

By Tom Simonite
2/29/12
7 Comments

Experts at the RSA security conference predict the worst threats for the year ahead.

How Young Is Too Young to Learn to Code?

By Christopher Mims
2/26/12
17 Comments

Scratch, Jr. is aimed at children who have yet to learn their ABCs.

Stochastic Pattern Recognition Dramatically Outperforms Conventional Techniques

By kfc
2/23/12
8 Comments

A stochastic computer, designed to help an autonomous vehicle navigate, outperforms a conventional computer by three orders of magnitude, say computer scientists

Physicists Predict The Existence of Time Crystals

By kfc
2/16/12
27 Comments

If crystals exist in spatial dimensions, then they ought to exist in the dimension of time too, says Nobel prize-winning physicist

Technologies from National Instruments

Programming with NI-DAQmx Functions
Go beyond the DAQ Assistant with NI-DAQmx functions for additional flexibility and performance

> Click here for more National Instruments Videos <

Whitepaper

How To Measure Voltage

Voltage is the difference of electrical potential between two points of an electrical or electronic circuit, expressed in volts. It measures the potential energy of an electric field to cause an electric current in an electrical conductor.

Most measurement devices can measure voltage. Two common voltage measurements are direct current (DC) and alternating current (AC).

Learn the fundamentals of creating an AC or DC voltage measurement system. See how to properly connect the signals to your data acquisition system for accurate acquisition.

This document is part of the How-To Guide for Most Common Measurements centralized resource portal.

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