In data transmission, what does simplex mode allow?

Simplex mode in data transmission refers specifically to a one-way communication channel, where data can only flow in a single direction, from the sender to the receiver. This means that the sender can transmit information, but the receiver is not able to send data back to the sender. This is commonly seen in scenarios where downstream information is needed, such as in television broadcasts or keyboard inputs to a computer.

Other modes of data transmission, such as duplex and half-duplex, involve bi-directional data flow. In duplex mode, data can be transmitted both ways simultaneously, while half-duplex allows for bidirectional communication but only one direction at a time. The concept of error correction is not specifically tied to simplex mode but applies more generally to communication protocols that may operate in various modes. Therefore, the specific characteristic of simplex mode is that it only supports data flow from the sender to the receiver.