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I am assembling a board which uses some IRFD110 MOSFETs but I don't know which way round to insert them. The PCB shows the components with a semi-circular cutout on one end, like many components, but the component itself has no such indicator. The MOSFETs are 4-pin devices with 2 pins linked...
The entire content of the EditBox is held in its Text property like this: EditBox1.Text
To get one character from that just use an index. EditBox1.text[1] is the first character in the string.
To get the ASCII value of a character use the ord function.
So you could have something like this...
troubleshoot serial interface
Not really. It is more usual to write if(a=='a') but the result is the same if you write it the other way around. Also note that writing if('a'==a) guards against a common bug. If you accidentally write a single equals sign instead of 2 signs togethr, ie...
Re: rs232 problem
By "computer" do you mean a PC running Windows? If so, it could be the common problem that Windows checks for a serial mouse during boot up. To get around this you can edit boot.ini to include something like:
/NoSerialMouse
This would apply to all ports. You can tell...
Perhaps 4 is in a list of standard interview questions somewhere, because I was asked that at an interview for a PC software post. My answer was that it depended on project priorities such as small code, fast code, or easy-to-maintain maintain code. I presented solutions based around...
which program is using serial connection
I think it is theoretically possible, but it would be hard work and it is likely to get very messy very quickly. The Ring Indicator pin changing state causes a hardware interrupt. You could create a handler for that interrupt. This would avoid the need...
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