Remember UART
Full name: Universal Asynchronous Receiver-Transmitter
Memory aid: Universal serial data is Received and Transmitted Asynchronously.
UART logic levels differ from RS-232 electrical levels.
Study area: Expansion buses · Batch 6
Relevant study for: CompTIA A+ Core 1 220-1201 · CompTIA Server+
Practice with exam flashcards →Hardware & Components / Knowledge library
UART — Universal Asynchronous Receiver-Transmitter
Converts between parallel data and asynchronous serial communication.
Why learn UART — Universal Asynchronous Receiver-Transmitter?
Converts between parallel data and asynchronous serial communication.
Where it came from
UART logic levels differ from RS-232 electrical levels.
- Memory aid (a learning cue, not the expansion): Universal serial data is Received and Transmitted Asynchronously.
Build your understanding
Work through these exercises in order. Try the task before opening a reference.
- Without looking, expand UART: Universal Asynchronous Receiver-Transmitter.
- Recall this memory aid: Universal serial data is Received and Transmitted Asynchronously.
- Explain the practical use: Converts between parallel data and asynchronous serial communication.
- Explain this distinction: UART logic levels differ from RS-232 electrical levels.
- Identify UART in a device specification, architecture diagram, or system inventory.
Documentation and sources
- PCI-SIG specifications (pcisig.com)