Picers - I need to buy a few 16F877's/F877A's but I'm somewhat confused by the options. A company like, eg Futurlec offers the following :- http://www.futurlec.com/ PIC16F877-04/P PIC16F877 Flash 40-pin 4MHz 8kB Micro PIC16F877-20/P PIC16F877 Flash 40-pin 20MHz 8kB Micro. With A/D PIC16F877A-I/L PIC16F877A Flash 44-pin 4MHz 8kB Microcontroller (??) PIC16F877A-I/P PIC16F877A Flash 40-pin 4MHz 8kB Microcontroller For starters, 44 pin is no good 'coz I use a 40 pin Picstart+ What's this 4Mhz vs 20MHz? There's no mention of different speed limits in my PIC16F87X Microchip data sheet - they're all DC to 20MHz, aren't they? I'm only in the xptal stage - doing LCDs, starting out on I2C, ADC & stuff like that. Would anyone be willing to offer advice on what I should go for? Especially any gotchas v/v the F877A? Thankz if can help - Debbie :) Find local movie times and trailers on Yahoo! Movies. http://au.movies.yahoo.com -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist