Month: February 2012
The BlackBerry PlayBook, a tablet computer with BlackBerry OS (based on QNX Neutrino) made by Research In Motion (RIM) which was first released in April 2011, didn’t quite impress a lot of people because of the lack of some features such as a native e-mail client, calendar, and contacts, even though the hardware is good.
Now, the long awaited OS 2.0, which will support those features, is expected to be released next week (February 21st as many speculate), so this is definitely good news! Also, the updated OS will allow the PlayBook to run Android apps. I’ve already installed the 2.0 beta version on mine, but haven’t really tested it fully. The beta had some of the features disabled, like the Video Chat, so I’m relieved that the 2.0 full version will be coming soon!
Please, RIM, don’t disappoint!
I decided to get my own Cisco equipment to practice with after receiving a switch (thanks to Jon Nistor at TorIX). It would help in making me become more proficient in what I love to do, that is networking. So far, for my own Cisco lab, I have three devices to work with – 3524 switch, 2501 router, and a 2503 router. I’m still looking to get more equipment, better if it has the IOS 12.4 which has the SDM (Security Device Manager) as well, though not really necessary.
Also, I found out a couple days ago that there’s this really good resource website which actually provides free access to Cisco equipment for training purposes. The site is PacketLife.net. Lab equipment and other costs are provided or sponsored by the site’s owner, commercial sponsors, and voluntary contributions by the community members. I know of a few sites that allow you to use their equipment but for a fee, so hearing about this site was fantastic. Members can schedule to use 1 of 3 blocks of equipment that they have one session at a time.
I’ll be using that site as well from time to time when I need to work with more equipment than what I have.
“Countdown Timer Circuit” is a project submitted by my group, namely, M. Amit, P. Briones, R. Enriquez, R. Lacson, A. Saldivar (yours truly), K. Tom, and A. Uy, for our ECE 130 – Computer Application class way back August 31, 2006 at University of St. La Salle, Philippines.
The seven-segment decoder is used in many applications. This can be used in displaying letters or numbers. It is most commonly used in digital clock displays, clock timers, and others. Using this has some advantages. For example, with a seven-segment decoder display, it is easier to read the time in a digital clock than with an analog one. It can be easily read because it easily catches the eye.
The group has chosen to create the digital project, Countdown Timer, in order to show one of the applications of the seven-segment decoder. This is only one of the many useful things that can be created with this component. Countdown timers can be started and then stopped at any time and then the display will be showing how much time had passed in between. This timer can be used in different activities. It can be used in sports, games, and in other areas.
We will be showing in the following pages the circuit schematic diagram, what components are to be used, and how the circuit operates.
SCHEMATIC DIAGRAM Read the rest of this entry »