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Digg it UP - Digital I/O Expansion
As you probably know, Google Adwords is a pay-per-click solution offered by Google. As with other PPCs, you are given the ability to place your small advertisement on various platforms controlled by Google. While the platform provides you with a large audience, you must manipulate your keywords to generate
SPI, I2C, Dallas 1 wire Tips For Car Leasing Business Development
A carefully drafted and well-executed business plan is essential to ensure that any business has taken the first basic step towards success. This is especially true with a car leasing business. A business plan helps people understand all aspects of the business better and aids in organizing the work proces
I2C (2 wires).
SPI (3-4 wires).
Dallas 1 wire (1 wire).
Johnson counter (2 wire).
Discrete Serial to parallel (3 wires, 6 for RX & TX).
RS232 (1-2 wires).
Note: Number of wires excludes ground.
Each has its own advantages and disadvantages:
RS232
Using an RS232 interface or a software encoded UART is the most unusual method but it gives a robust communication method and if you transmit data in one direction it only needs 1 wire (but you need a UART to receive either a discrete UART or a microcontroller with built in UART).
Johnson counter
The Johnson counter 4017 (74HC4017) is a useful little chip that turns on each output after each clock edge but it is limited to 10 outputs.
Serial to parallel (& vice versa)
This method uses discrete chips 74HC595 (serial in and 8 bit parallel out) and 75HC165 (8 bit parallel in and serial out) and these can be daisy changed indefinitely. The only problem is that you need 6 pins to use both at the same time. (you may be able to multiplex the clock and latch pins to share between them saving 2 pins).
SPI, I2C, Dallas 1 wire Industrial Marketing Evolved With The Internet, Has Your Company?
“When doesn’t money matter?” exclaimed one of my clients during a recent conversation about the merits of industrial internet marketing. His company, a medium-sized electric motor supplier, was earning approximately $15 million dollars in annual revenue – a long way from 1991; his first year in business anr of wires excludes ground.
Each has its own advantages and disadvantages:
RS232
Using an RS232 interface or a software encoded UART is the most unusual method but it gives a robust communication method and if you transmit data in one direction it only needs 1 wire (but you need a UART to receive either a discrete UART or a microcontroller with built in UART).
Johnson counter
The Johnson counter 4017 (74HC4017) is a useful little chip that turns on each output after each clock edge but it is limited to 10 outputs.
Serial to parallel (& vice versa)
This method uses discrete chips 74HC595 (serial in and 8 bit parallel out) and 75HC165 (8 bit parallel in and serial out) and these can be daisy changed indefinitely. The only problem is that you need 6 pins to use both at the same time. (you may be able to multiplex the clock and latch pins to share between them saving 2 pins).
SPI, I2C, Dallas 1 wire The Secret of Articles
The secret behind articles is the same secret of how to write a killing sales letter. What you are really doing is to submit and article that catches people interest and click the website of the author.This is so common that everyone is doing, but not everyone is doing the right wayLet me lita in one direction it only needs 1 wire (but you need a UART to receive either a discrete UART or a microcontroller with built in UART).
Johnson counter
The Johnson counter 4017 (74HC4017) is a useful little chip that turns on each output after each clock edge but it is limited to 10 outputs.
Serial to parallel (& vice versa)
This method uses discrete chips 74HC595 (serial in and 8 bit parallel out) and 75HC165 (8 bit parallel in and serial out) and these can be daisy changed indefinitely. The only problem is that you need 6 pins to use both at the same time. (you may be able to multiplex the clock and latch pins to share between them saving 2 pins).
SPI, I2C, Dallas 1 wire Real Estate Marketing - 10 Ways to Improve Your Marketing This Year
New Year's. A time to reflect on the past while planning for the future.In the spirit of New Year's, I've put together this guide to help you prepare for a new year of marketing. So without further ado, here are ten ways that you -- as a real estate agent -- can improve your marketing in 2006.
Serial to parallel (& vice versa)
This method uses discrete chips 74HC595 (serial in and 8 bit parallel out) and 75HC165 (8 bit parallel in and serial out) and these can be daisy changed indefinitely. The only problem is that you need 6 pins to use both at the same time. (you may be able to multiplex the clock and latch pins to share between them saving 2 pins).
SPI, I2C, Dallas 1 wire Job Search & Resume Tips
Finding a job has become much more of a challenge in recent years. Using the Internet as an additional resource will increase your options to find many great job opportunities, which are not always advertised in the newspaper. Many employers will place an online advertisement in conjunction with or in placd serial out) and these can be daisy changed indefinitely. The only problem is that you need 6 pins to use both at the same time. (you may be able to multiplex the clock and latch pins to share between them saving 2 pins).
SPI, I2C, Dallas 1 wire
The three other interfaces are more complicated but still very useful for digital I/O expansion. To use them you have to choose devices that use the same interface protocol (that you generate from the microcontroller).
Note: There are many device to choose from for each type of protocol e.g. digital pot, ADC, EEPROM etc.
I2C and SPI are supported by newer PIC chips so they can run quite fast using the internal module (SSP or MSSP) whereas the Dallas 1 wire system is encoded in software.
The best thing about the Dallas 1 wire system is that you can used it over long distances whereas the other two are intended for use within a unit (I2C) or on the same board (SPI).
Note: If you need to add a keypad or LCD you could use I2C (using a PIC chip e.g. 16F88) on a separate board.
There is more detailed information on the website here and how to build a website like it
HTTP = HTML link (for blogs, profiles,phorums):
Team Leadership - The Power of Team Leadership in Business Hero's Journey (Monomyth): From the Crossing of the Return Threshold to Mastery of the Two Worlds
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