Analog signal is a continuous signal in which one time-varying quantity represents another time-based variable. These kind of signals works with physical values and natural phenomena such as earthquake, frequency, volcano, speed of wind, weight, lighting, etc. Analog Signal
A signal is an electromagnetic or electrical current that is used for carrying data from one system or network to another. The signal is a function that conveys information about a phenomenon. In electronics and telecommunications, it refers to any time-varying voltage that is an electromagnetic wave which carries information. A signal can also be … Read more
Researchers from the Korea Institute of Science and Technology have led a project to develop a hard, electronic smartphone display material which can self-heal from cracks and other damage. Smartphone display repair can often cost so much that many owners decide it isn’t worth paying for and simply dump the phone for an entirely new handset … Read more
Researchers from Ohio State University have developed a machine learning method which helps to determine which existing medications could be applied to improve outcomes in diseases for which they have not been prescribed. Drug repurposing – which accelerates the commercialisation of drugs and lowers the risk associated with safety testing – is not a new concept. … Read more
The Singaporean Minister for Home Affairs has confirmed that the state’s police force has the authority to access Covid-19 contact-tracing app data for the purposes of criminal investigations, raising potential privacy concerns. Singapore’s TraceTogether app was developed in less than two months and was among the first Covid-19 contact tracing apps to be launched. The … Read more
Researchers from University College London’s Sainsbury Wellcome Centre have devised a brain-machine interface (BMI) which allows mice to learn to move a cursor to a target using only their brain activity The study sheds light on how the brain represents causally-controlled objects. When a mouse was controlling the cursor, brain activity in the higher visual … Read more
Engineers from Rutgers University have developed a 3D-printed smart gel that changes shape when exposed to light and can be utilised as a colour-changing “artificial muscle”. The smart gel is inspired by the ability of cephalopods such as octopuses, squid and cuttlefish to change the colour and texture of their skins for camouflage and communication. … Read more
A film that effectively evaporates sweat from skin while using the moisture to power wearable electronics has been developed by researchers from the National University of Singapore (NUS). The main components of the thin film are two hygroscopic chemicals – cobalt chloride and ethanolamine. Besides being extremely moisture-absorbent, the film can rapidly release water when … Read more
Digital systems have such a prominent role in everyday life that we refer to the present technological period as the digital age. Digital systems are used in communication, business transactions, traffic control, spacecraft guidance, medical treatment, weather monitoring, the Internet, and many other commercial, industrial, and scientific enterprises. We have digital telephones, digital televisions, digital … Read more
Microplastics have been found to be so light they can be carried on the wind and transported to far-flung parts of the ocean, including those that appear to be clear of the pollutant. Microplastics – which are defined as particles smaller than 5mm in diameter – can stay airborne for hours or days. This … Read more