Media Category Archive

How the USB revolutionised computing

6 Replies Christopher Roberts

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The Universal Serial Bus, or as it is now commonly referred to as the USB, is a port designed to provide power supply or share data between electronic devices.

Ask someone to think about a USB, most people will naturally assume you are talking about a memory stick, which in essence is a super small, lightweight portable hard disk. However don’t confuse a USB port (the holding device) with a USB flash drive (a memory stick).

The USB (both port and flash drive) is something most of us take for granted in modern times, so I thought in this post it would be interesting to look at some of the uses for USBs, and how the USB has evolved over time.

USB 1.0

Design prototyping for the USB began when computing was still in its infancy, way back 18 years ago in 1994. At the time the port was being developed by the big players in the computing industry – Microsoft, Compaq, Intel, IBM, etc. These companies realised that there was (at the time) no easy medium which allowed communication through computers. For the computer to evolve, the companies realised that this would be an integral part of the system, as if you cannot share data, options are limited. Do remember this was happening in times before the internet was the global phenomenon it is today.

The first USB was produced in 1995 by Intel. Computers of the time started to come fitted with one or two USB 1.0 ports – although looking back, relatively few PCs were ever released with USB 1.0 ports. Nowadays, USB ports are in most cases a necessity for keyboard and mouse input devices.

The USB 1.0 was a revolutionary product, however looking back, its functionality was limited. Its maximum data transfer speed was 12 megabits per second. Relatively slow. That said, back when it was first introduced, a computers internal hard drive was typically only sized around 256/1024 mb (1/4 of a gigabyte to one gigabyte).

USB 2.0

In late 2000, the USB flash drive was released, enabling users to store more data than ever before, by storing things external to their computer. It would be an understatement to say that the USB flash drive was a step up from the floppy disk – it was more of a leap up! Initially, most USBs were typically 8 megabytes in size, meaning that they could hold more than five times what a floppy disk could.

Earlier in the year, the USB 2.0 was released, meaning that data transfer could happen 40 times faster, at 480 megabits per second. Initially some flash drives were designed for 1.0, however soon they were all being designed for the new 2.0 port, due to the increased possibilities.

USB 3.0

In 2008, the currently less well known USB 3.0 was released, which is more than ten times faster than its 2.0 brother.

USB flash drives have also improved over the years, and it is now possible to get a USB flash drive that is 256 gigabytes – one quarter of a terabyte. These disks are bigger than most computer hard drives were just a few years ago, showing the extent of the upgrades this technology has undergone.

A 256 gigabyte memory stick would though be useless with a USB 1.0 port as filling it would take almost 2 days (1.98 days) due to the speed of the data transfer. Even with a USB 2.0 port, the data transfer would take almost 72 minutes – more than an hour. Modern USB 3.0 ports could have the job done in less than 7 minutes. That really shows the true scale or achievement and advancement made in the USB industry.

Modern Uses

The USB is a crucial component of the modern PC, and is also very important for other devices. It is now possible to power many smartphones and multimedia devices via USB, either through a plug or your computer.

Some people use USB sticks to carry around a portable operating system with them, as it is perfectly possible to load Windows 7 onto a 16 gb memory stick and carry it around with you.

A USB penThe USB itself is a very flexible (not literally, the board would probably snap were you to bend it) device, with a lot of room for aesthetic variation. You can now get a range of Promotional USB Sticks, which many organisations often utilise, choosing to offer branded USBs as promotional gifts. This is all thanks to the readily available technology and cheap price of the components involved.

USBs now come shaped as credit cards, keys, pens, robots, people and even wine bottles!

A USB shaped into a bottelDo you have any funky USB flash drives at home? How about USB ports, have you counted how many your PC has? Comments and feedback below as always 🙂

Second Hand Technology Finds

9 Replies Jonny Hankins

If you walk round Cambridge in Massachusetts in June, you find the streets filled with discarded belongings. The students are leaving Harvard, MIT, Boston University and all the others institutions and as they leave they abandon the things they cannot take with them by the side of the road. Many stacks of things have a little note or post it attached saying ‘take me’ or ‘free, working’, and it is very much part of the culture to take things.

On my final few days in Cambridge last week I walked the streets with my kids from one park to another, and I collected some interesting things, including some very interesting and expensive pieces of second hand technology.

A common sight on Cambridge Streets

I collected a pair of M Audio AV40 studio speakers, fully functioning and beautiful to listen to. List price $229.99. A few scratches on the top of one but obviously only had light domestic use. Into the back of the bike trailer they went and onward on our hunt.

Further down the road I picked up a large 27 inch LCD computer screen, again lightly used and well looked after. At least $200 if you buy it new, as its previous owner had done probably 9 months before.

I was fortunate enough to pass a young student as she emptied her office into a box on the street, so I collected 6 Moleskin divided folders ($26 each), 200 blank DVD’s and cases, about 60 blank CD’s and 2 nice moleskin notebooks. Into the trailer, the kids can walk.

Last year I saw bags of cables, modems and power units, and as I moved from Europe I took what I needed.

On this trip I also saw a 32inch flat screen TV but I couldn’t carry it, and a standard size LCD TV too but with no remote control. I left that where it was too and will explain why.

The thing about TV’s and monitors is that you have to pay $25 for the city services to pick them up, so many are abandoned. If you pick one up and it doesn’t work you have to pay to dispose of it, or leave it outside again for someone else to do the same. Either way not a great result. I also saw at least 10 old cathode TV’s, only one with the label to demonstrate that it had been paid for.

This started me thinking about the effect that a moving student population must have on the technology market and by extension the development of new products. Practically every student has a laptop, smart-phone, TV and high speed internet at home and these things are all paid for when they move to their university of choice. Producers must see a massive peak in September, and an associated rise in profits.

So this leads to the question of what happens to all of this stuff when they move on. In many cases they take it, but some cannot be transported and is left, either by the side of the road, dumped or left in the house.

As we all know the dumping of technology is extremely damaging, recycling a must but also ethically dubious, so how about something like the Cambridge model?

The model is also used here for cans and bottles. If you buy a beer in a bottle or can, the can or bottle has a value. If you take it back to the shop they recycle it and give you 10c back. I have seen the same model with plastic bottles in Scandinavia. The result of this scheme is that a business has grown up around collecting empty bottles etc from the bins, students in the case of Scandinavia and homeless people here.

Well, for however much you might not like the idea of going through somebody’s recycling bin for returnables, it looks like an extremely efficient form of recycling to me, and revenue for those people that really need it. And although I don’t do bottles you should see my well stocked office and hear my stereo at home!

Waste less!

Tagging students in schools

10 Replies Jonny Hankins

This week a school district in San Antonio in Texas USA approved a program for tagging students while they are in school. The students will have to wear a small card at all times while in the school so that their positions can be constantly monitored by the authorities.

The RFID tags will be provided free of charge but if they lose or destroy it the student will have to pay $15 for a new one.

A student with a RFID tag

The latest fashion, an RFID tag

The schools that are implementing the project on a trial basis state that they want to “harness the power of the technology to make schools safer, know where our students are all the time in school, and increase revenues,”

‘Increase revenues’ is the part that catches my eye the most here, why might the project increase revenue? The answer is in attendance, the schools receive state funding based upon attendance and how many special needs children take the school buses, in this case based upon the related Medicare payments.

The schools hope to make about $1.7 million a year, and with the cost of setting up the scheme about half a million and about $135 thousand a year to run they are ‘quids in’ as we say in Manchester.

Rather unsurprisingly some of the parents of the children that attend the 2 pilot schools have expressed some reservations. Privacy issues due to the invasive nature of the idea have been raised, and some argue that kidnapping and related horrors could even be made easier if someone managed to gain access to the system and the real time information that it produced.

This news reminds me of an article that I wrote a few years ago on the Bassetti Foundation website regarding spying technology and later its proposed uses in schools in Italy. Here is a mention on a blog related to the matter in question. As this article suggests, the problem of mobile phone use in schools and particularly for cheating in tests and exams is apparently rife, so one school bought a military jammer that blocks the signal making the phone system non operational.

This event also caused a few raised eyebrows (to say the least) with people claiming the right to contact their children in emergency situations. Problems of overspill and local disturbances were also raised but the school argued that the system was necessary in order to uphold the school rules and quality and reliability of its exam process. The law has now changed so the system is no longer in use but the will and means was there.

Coaxing and encouragement while at school and the notion of doing the right thing seem to be out of the door then!

As a note I was a teacher in an Italian secondary school for 11 years myself, and I don’t think this approach will work. Kids are smart.