[Need help about PC Osciloscope]

I am very interested to build a PC Osciloscope found in this website under PC . However, I have quite a number of difficulties.

1. I don't know what probe may i use. Can I use a probe from multimeter?

2. Can I measure a signal from a circuit?

3. Where can I connect my circuit ground to?

Please reply me.

???

[help, help, help, it's too hot]

Hi Ante

i want to amplify these signals with an opamp
i don't want to use a special chip.
and i have only a j type thermocouple.

thanks for your reply.

[help, help, help, it's too hot]

???

i want to construct a temperature sensor using a thermocouple.
the emf which produced from a thermocouple is very small amount to enter to the ADC 0808 ( about 0 to 69.55 mV ). therefore i want to amplify this emf with an amplifier.

can someone help me?

???

[how to design a PBX]

hey ecerulz,

follow the link.
you will find a complete pbx system.

http://instruct1.cit.cornell.edu/courses/ee476/FinalProjects/s2001/pr57/REPORT.htm

[Help me about a PC Osciloscope]

???

i want to construct a pc osciloscope.
anyone can help me?