logging in or signing up PARALLEL AND SERIAL PORT robolution Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 1917 Category: Education License: All Rights Reserved Like it (1) Dislike it (1) Added: November 10, 2009 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... Premium member Presentation Transcript Computer Control : Computer Control Parallel & Serial Port Communication PC Parallel Port - Features : PC Parallel Port - Features Commonly known as the printer port 25 pin D-Type connector It has 12 digital output pins, 5 digital input pins Pins operate at the TTL voltage level i.e. 0 – 5V Port identified by a base address in the computer I/O memory space PC Parallel Port – Pin Layout : PC Parallel Port – Pin Layout PC Parallel Port – I/O Registers : PC Parallel Port – I/O Registers Most PC’s have 378 Hex base address 8 output pins are accessed via the DATA port (Base address) 4 output pins are accessed via the CONTROL port (Base address + 2) 5 input pins are accessed via the STATUS port (Base address + 1) PC Serial Port - Features : PC Serial Port - Features Most commonly 9 pin D-Type connector. 25 pin D-Type is rare Pins operate at -25 to + 25 voltage levels Data transmitted as a bit sequence Known as the EIA RS232C port or simply RS232 EIA RS232C Specifications : EIA RS232C Specifications Logic 0 is between +3 to +25 volts Logic 1 is between -3 to -25 volts -3 to +3 volts region is undefined Maximum data rate of 19,600 bps Serial Port vs. Parallel Port : Serial Port vs. Parallel Port Serial cables can be much longer that Parallel cables 50V swing compared to 5V swing Serial suited for wireless transmission Microcontrollers just need two pins (RXD & TXD) for communication RS-232 Level Converters : RS-232 Level Converters For using the RS232 data, digital devices need TTL/CMOS voltage levels Level conversion is done using IC MAX232 / DS232 RS-232 frame decoding : RS-232 frame decoding The decoding of the bit sequence frame is done by computer hardware When communicating with robots, decoding done by onboard microcontroller Microcontroller Serial communication interface is known as UART (Universal Asynchronous Receiver Transmitter) You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.
PARALLEL AND SERIAL PORT robolution Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 1917 Category: Education License: All Rights Reserved Like it (1) Dislike it (1) Added: November 10, 2009 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... Premium member Presentation Transcript Computer Control : Computer Control Parallel & Serial Port Communication PC Parallel Port - Features : PC Parallel Port - Features Commonly known as the printer port 25 pin D-Type connector It has 12 digital output pins, 5 digital input pins Pins operate at the TTL voltage level i.e. 0 – 5V Port identified by a base address in the computer I/O memory space PC Parallel Port – Pin Layout : PC Parallel Port – Pin Layout PC Parallel Port – I/O Registers : PC Parallel Port – I/O Registers Most PC’s have 378 Hex base address 8 output pins are accessed via the DATA port (Base address) 4 output pins are accessed via the CONTROL port (Base address + 2) 5 input pins are accessed via the STATUS port (Base address + 1) PC Serial Port - Features : PC Serial Port - Features Most commonly 9 pin D-Type connector. 25 pin D-Type is rare Pins operate at -25 to + 25 voltage levels Data transmitted as a bit sequence Known as the EIA RS232C port or simply RS232 EIA RS232C Specifications : EIA RS232C Specifications Logic 0 is between +3 to +25 volts Logic 1 is between -3 to -25 volts -3 to +3 volts region is undefined Maximum data rate of 19,600 bps Serial Port vs. Parallel Port : Serial Port vs. Parallel Port Serial cables can be much longer that Parallel cables 50V swing compared to 5V swing Serial suited for wireless transmission Microcontrollers just need two pins (RXD & TXD) for communication RS-232 Level Converters : RS-232 Level Converters For using the RS232 data, digital devices need TTL/CMOS voltage levels Level conversion is done using IC MAX232 / DS232 RS-232 frame decoding : RS-232 frame decoding The decoding of the bit sequence frame is done by computer hardware When communicating with robots, decoding done by onboard microcontroller Microcontroller Serial communication interface is known as UART (Universal Asynchronous Receiver Transmitter)