Friday, March 26, 2010

my old Apex DVD player

I'm using Donna's old DVD Apex AD-1500 player in my room, which works except her remote broke. But I'm using Sue's remote which works for her old Apex [AD-1200 I think] player which broke. (Or was it the other way around? Doesn't matter too much I guess. Come to think of it, I bought both of those players as gifts to them. Actually I first gave Sue my old Fisher player, but I didn't like the picture of the Apex as well as the Fisher, so I swapped it.)

Anyway. The DVD player no longer ejects. The belt broke. I know it broke because I could see the broken belt when the drawer opened. I was going to give it away or trash it. But I think I'll keep it because I figured out how to work it. (In the meantime, I opened it up and tied the belt to one of the group of wires, so the belt doesn't muck anything up.)

To eject, press the eject button so that the Open message appears on the LCD panel (or is it LED? I think it's LED because it's emitting the light). Then tip the player down, so that gravity opens the drawer. [Hey, even easier. Turn off the power, then tip the player.]

To play, turn off the power. Open the drawer. Put the DVD in. Push the drawer all the way in. Then turn on the power.

Somehow this seems in keeping that I'm watching the picture on a Commodore 1702 monitor 8)

Wednesday, March 24, 2010

Khan Academy

Imagine if you could go online and find a math, science or economics tutor that could help you get your daughter through a high school trig equation or your son to master a college finance course. Envisage also that this would be presented in a clear, concise and even entertaining manner. Naturally it would be free of charge.

Well, folks, look no more. Welcome to the Khan Academy.

Working out of his home in Silicon Valley, Salman Khan, a former hedge fund analyst, could be transforming the way people all over the world will learn math and other subjects.

Khan, an MIT math and science grad with an MBA from Harvard, was doing very well at his employer's hedge fund but got hooked on education after he helped one of his cousins, a seventh-grader who was having trouble with math.

He tutored her online with a blackboard on the screen. That led him to eventually place math lessons on YouTube. It didn't take long before he was a worldwide phenomenon. (See www.youtube.com/watch?v=po3DAsr6mDE)

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[8/26/10] Bill Gates' favorite teacher

*** [5/2/14]

Here's one way to keep you mind sharp (for free).  Learn math at the Khan Academy.