Saturday, September 18, 2004

Pasar Road

I finally made it down to Pasar Road. For some time now, I'd been trying to choose a microcontroller to use in some electronics and home automation projects I've had in mind. There is a bewildering array of possibilities and I'd been overworking the mouse and loading Google with search after search for material. Somehow, I'd been unable to actually go to Pasar Road, which everyone had been telling me is the place to buy electronics components in KL.

Finally today, I got off my butt and headed down there with an ex-colleague for a bit of guidance and a shopping list of components. Ultimately after all that fuss of trying to choose the most suitable and economical microcontroller... it all came down to availability. I took what they had in stock! So I bought 4 Microchip PICmicro® 16F84A/4 chips for RM20 each - I had estimated per unit price to be RM35, so that was a pleasant surprise. Pictured below are most of the items I bought, with the bag of 4 PICmicro® MCUs indicated by the red arrow.



Everything else was pretty cheap in comparison to the chips and they turned out to be the single most expensive items in the day's purchases. The idea behind buying 4 PICmicro® MCUs was so that I could avoid having to go back to Pasar Road again for as long as possible as the other items can be sourced closer to home.

The 16F84A/4 runs at 4MHz with a throughput of 1 million instructions per second, has 13 digital I/O pins, 2 serial I/O pins, 1x 8-bit timer, 68 bytes of RAM, 64 bytes of EEPROM and 1792 bytes of Flash RAM for program storage. Most of the items were bought from Standwell Trading Co., who gave me friendly and efficient service. Strangely it was this smaller shop that had the MCUs, while some of the bigger shops didn't stock any microcontrollers at all.

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