RS-232 Serial Communication Protocol Explained: DB9 and DB25 Connectors, and DTE/DCE

[@EngineeringFunda]

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[@TheNameOfTheNation]

Sir you are a gem...quality in presenting your slides, clarity in explanation and above all you made me ARM subject much easier .......tq sir. Long live with happiness

[@EngineeringFunda]

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[@praful4383]

One of best video in detail ❤❤❤

[@EngineeringFunda]

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[@wonderdreams5588]

Your video is very useful to me

[@EngineeringFunda]

Glad to hear that

[@Mynhassty]

11:40 - I'm confused, in the left-side of the diagram we have that DTR has source from DTE, but in this example where DCE initiates the communication, DCE itself will give RTS signal to DTE, meaning that DCE also has RTS?

[@RahulKumar-yy7hd]

RS-232 (Recommended Standard 232): RS-232 is a serial communication standard for transmitting data between devices. Types of RS-232: 1. RS-232-A (original standard) 2. RS-232-B (improved standard) 3. RS-232-C (current standard) Uses: 1. Serial communication 2. Data transmission 3. Device control 4. Instrumentation 5. Industrial automation 6. Medical devices 7. Point-of-Sale (POS) systems 8. Computer peripherals Application: 1. Industrial control systems 2. Medical devices 3. Scientific instruments 4. Data loggers 5. GPS systems 6. Telemetry systems 7. Robotics 8. Embedded systems Ranges: 1. Maximum cable length: 50 feet (15 meters) 2. Maximum data rate: 20 kbps 3. Maximum baud rate: 115,200 bps Benefits: 1. Simple and reliable 2. Low cost 3. Wide compatibility 4. Easy implementation 5. Flexible connectivity 6. Support for multiple devices 7. Error detection and correction 8. Asynchronous communication Limitations: 1. Limited speed 2. Limited distance 3. Susceptible to interference 4. Limited number of devices 5. Half-duplex communication 6. Requires null modem cable 7. Not suitable for high-speed applications 8. Vulnerable to data corruption Important Objective Questions: _Multiple Choice Questions_ 1. What is the primary purpose of RS-232? a) Parallel communication b) Serial communication c) Synchronous communication d) Asynchronous communication Answer: b) Serial communication 1. What is the maximum baud rate of RS-232? a) 9,600 bps b) 19,200 bps c) 38,400 bps d) 115,200 bps Answer: d) 115,200 bps 1. What is the maximum cable length of RS-232? a) 10 feet b) 50 feet c) 100 feet d) 500 feet Answer: b) 50 feet _True/False Questions_ 1. RS-232 is a synchronous communication standard. (True/False) Answer: False 1. RS-232 supports multiple devices. (True/False) Answer: True 1. RS-232 has a maximum data rate of 100 Mbps. (True/False) Answer: False _Fill-in-the-Blank Questions_ 1. RS-232 operates at a _______ voltage level. Answer: ±12V 1. RS-232 has a maximum data rate of _______ kbps. Answer: 20 kbps _Essay Questions_ 1. Describe the architecture of RS-232. 2. Explain the differences between RS-232 and RS-485. 3. Discuss the advantages and limitations of RS-232. Important RS-232 Standards: 1. EIA/TIA-232 (Electronic Industries Alliance/Telecommunications Industry Association) 2. ITU-T V.24 (International Telecommunication Union) 3. ISO/IEC 2110 (International Organization for Standardization) Important RS-232 Protocols: 1. Asynchronous protocol 2. Start-stop protocol 3. Half-duplex protocol 4. Point-to-Point protocol

[@phpganesh2818]

super

[@EngineeringFunda]

Your Appreciations, care and share matters a lot to me. #EnginneringLove. All the subjects playlist of Engineering Funda is available in comment section. Share it with your friends to support us. Your positive comments motivates me and person like me get boosted by my students feedback. Thanks and welcome 🙏

[@pradeep12ful]

when we using the asynchronous data communication how rs232 protocol is full duplex??

[@EngineeringFunda]

Asynchronous and full duplex has no relationship

[@prakashgaikwad1125]

Make lecture of UDS, CAN, ROTS

[@rajibadhya8653]

Null modem ....How it works in detail?

[@harishsidhardh722]

Clarity missing on data terminal ready pin..

[@shivnandankumar7223]

Please, provide details of rs422, rs485 & canbus protocol.

[@Tapajara]

RS-232 is not a protocol. That standard only defines pins and voltage levels. What you are referring to is the NRZ protocol. It stands for "Non Return to Zero". You can run this same protocol over RS-422/423 or RS-485.

[@srijyothsna-t5x]

rs -232 and uart are same or diff ?

[@EngineeringFunda]

Different

[@ec-007srijyothsna-dv7kj]

Do you have any idea on emulating uart in qemu

[@EngineeringFunda]

@@ec-007srijyothsna-dv7kj I have video on UART as well

[@mrityunjayshrivastav9832]

Sir, Is MAX 232 and RS 232 is same??...

[@EngineeringFunda]

MAX 232 is an IC and RS 232 is a serial communication protocol

[@EngineeringFunda]

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