Buffer Register and Controlled Buffer RegisterPublished on 24/2/2012 and last updated on Thursday 17th of May 2018 at 07:28:39 PM
Buffer registers offer no means of control over the inputs which in turn leads to uncontrolled outputs. In order to overcome this drawback one can resort to controlled buffer registers as shown by Figure 3. In this design, tri-state switches are used to control the operation of loading and/or retrieval of the data to/from the buffer register. Here one has to pull the or control line (blue line) low in order to store the data into the register, while control line (red line) should be made low to read the data.