SOFTWARE WRITER

Please dont apply if you can not do the work .
I need to make a function generator within the Audio spectrum 1 Hz to 20
Khz in 1 Hz steps
keyboard entry say 4*4 and a LED and or LCD display 5 digits
I would of coarse prefer to use a Intel 8051-2 series chip with Dip
package
for accuracy of the frequency timing an external timer could be used
anyone out there that would like to write the program then give me a quote.