The ornamental design for an electronic displayunit, as shown and described.
1. Electronic display unit
1.1 : Perspective
1.2 : Rear perspective view
1.3 : Front
1.4 : Back
1.5 : Left
1.6 : Right
1.7 : Top
1.8 : Bottom
1.9 : Enlarged
1.10 : Perspective
1.11 : Rear perspective view
1.12 : Front
1.13 : Back
1.14 : Left
1.15 : Right
1.16 : Top
1.17 : Bottom
1.18 : Enlarged
The reproductions 1.1 to 1.9 show the design in the first position; the reproductions 1.10 to 1.18 show the design in the second position; the reproductions 1.9 and 1.18 are enlarged views of portions of the reproductions 1.2 and 1.11 respectively, represented by the square dash-dot lines and curvy line and the numbers 1.9 and 1.18; the broken lines indicate portions of the article that form no part of the claimed design.