The ornamental design for a monitor for computer, as shown and described.
1. Monitor for computer
1.1: Front perspective view
1.2: Front view
1.3: Back view
1.4: Left view
1.5: Right view
1.6: Top view
1.7: Bottom view
1.8: Back perspective view
1.9: Partial enlarged back perspective view, taken from circle 9 in reproduction 1.8
1.10: Second front perspective view, showing the web cam feature in an extended position
The dash-dash broken lines depict portions of the monitor for computer that form no part of the claimed design. The dot-dash broken lines in reproductions 1.8and 1.9are included for the purpose of illustrating the partial enlargements and form no part of the claimed design.