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 The logic gate without IC

Thursday, January 30th, 2014

The past, we’ve used only a digital logic circuit by IC. But, in truth. We do not need any Ics, may use Switch or Diode or transistors connected as a logic circuit. Try to see Figure 1 which use switch and diode connected as AND and OR gate , To make us understand the meaning […]

 The experiment touch switch using JK-flip-flop as RS-flip flop.

Tuesday, January 28th, 2014

In the previous circuit, we use JK-flip-flop in as RS-FF. We will use pin R and S of flip-flops, by stores data of pin J, K and CK(clock). The experiment about the touch switch just to use your finger to touch them only also can turns ON-OFF circuit, this switch type is widely popular. We […]

 Adding width of my old electronics workbench desk

Tuesday, January 28th, 2014

An electronics workbench desk is very necessary. I inherited from my father, are the old desk about the age for 40 year. I like it a lot and binding,it is still in good condition. But it has little to wide for me. (Compared to a typical computer) Figure 1 the my old desk from my […]

 Slacko Puppy Linux on Lenovo Thinkpad X100e(no hard disk)

Friday, January 24th, 2014

I used a lenovo thinkpad x100e, Long enough approx for 3 year. I like it because small size but so heat and not long time battery. Now it not have a hard disk because It is damaged and I no money for buy it. But I have main laptop for use every days. So not […]

 Car forgot turn off headlights alarm

Thursday, January 23rd, 2014

If we forget to turn off the lights in the car or headlights on all night but in the morning you could not even start the car Because batteries lose some voltage, we lets to build the warning forgot off lights circuit better. As perfect circuit in Figure 1. Use CMOS-IC no-MC14023B. Which is a […]

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