To some, digital technology is the greatest thing since sliced bread. To others, it’s a sign of the end times. Wherever you fall on the tech-support continuum, it’s clear that the translation of data into streams of zeroes and ones is a revolution the likes of which hasn’t been seen since the invention of moveable type. Not just computer scientists but art historians, composers, social psychologists, economists — all are feeling the impact of the shift from analog to digital. We asked Tufts professors from these and other disciplines to explain how two little numbers are reshaping the world.
What is binary code, anyway?
Braille is the first example ever of text taking digital form (it’s even read digitally — with one finger). ironically, it’s used less and less as computers are used more and more.
Binary code is a way to represent information using two symbols: 0 and 1. Binary is the smallest alphabet. Similar to Morse Code, where a single dot or dash doesn’t mean much, it is the sequence of the dots and dashes that creates something of meaning. Binary codes have been developed to represent everything from a sonnet to Lady Gaga’s newest song to a Google map of your neighborhood. So...what is binary code? Everything.
There’s one big catch when we talk about binary code and computers. We have only a finite amount of space to store digital representations. If we want to store the number pi, for example, we need to store an approximation. High–resolution images similarly require a great deal of space.
As memory has become cheaper and therefore more available, we have been able to store a greater amount of information. But the digital revolution isn’t just about more memory. The better our representations and approximations become, the less memory we need, which enables us to do even more with computers.
Ben Hescott is Assistant Professor of Computer Science. In 2011, he won the Lerman–Neubauer Prize for Outstanding Teaching and Advising at Tufts and the Institute of Electrical and Electronics Engineers (IEEE) Computer Society’s Computer Science and Engineering Undergraduate Teaching Award.
Keith Maddox likes this. Take racial bias and prejudice as an example. The illusions of interpersonal distance and anonymity make people more willing to say and do things online that they might not in person. So social psychologists have used Facebook, Twitter, OkCupid, even Second Life to explore intergroup bias in interpersonal attraction, political attitudes, and consumer behavior.