PIC RS232 to USB Only PC - Which Adaptor?

Hi,

I've started looking through Nigels' RS232 tutorials. I've got two PIC18F2420's connected, one sending a byte to the other which it then sends it to an lcd. I want to connect my PC to a PIC but the PC only has usb ports. I need an adaptor. Will the cheapest of these three do the job?

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Thanks in advance for any help.

Cheapest should be fine.

As above - I use a no-name USB to serial converter for my PC -> Pic communications and its fine

If you can find one there are USB to TTL serial adapters (parallax has one) which can be directly connected to the PICs USART pins (no MAX232 needed)

it work perfectly fine for any RS232 converter as i bought it last time .