https://www.23hq.com/tag/trackball en-us 23people http://www.23hq.com/resources/um-style/logo-20.gif http://blogs.law.harvard.edu/tech/rss https://www.23hq.com/rss/tag/trackball false https://www.23hq.com/mprove/photo/20740960 <p><a href="https://www.23hq.com/mprove/photo/20740960"><img src="https://www.23hq.com/16171062/20740960_6c7f261c55056eab7f3214cbd5d317d5_standard.jpg" width="460" height="345" class="23-standard"/></a></p><p>Macintosh Portable. The trackball can be moved to the left side as well.</p><p>Photo by <a href="https://www.23hq.com/mprove/">mprove</a></p> https://www.23hq.com/mprove/photo/20740960 Tue, 14 Apr 2015 19:37:16 GMT https://www.23hq.com/mprove/photo/20740954 <p><a href="https://www.23hq.com/mprove/photo/20740954"><img src="https://www.23hq.com/16171062/20740954_3e423483a96b49897d5b60a6d31a1e7a_standard.jpg" width="460" height="345" class="23-standard"/></a></p><p></p><p>Photo by <a href="https://www.23hq.com/mprove/">mprove</a></p> https://www.23hq.com/mprove/photo/20740954 Tue, 14 Apr 2015 19:36:44 GMT https://www.23hq.com/mprove/photo/20740949 <p><a href="https://www.23hq.com/mprove/photo/20740949"><img src="https://www.23hq.com/16171062/20740949_616c0b4c39173ed983c34f1df334e117_standard.jpg" width="355" height="460" class="23-standard"/></a></p><p></p><p>Photo by <a href="https://www.23hq.com/mprove/">mprove</a></p> https://www.23hq.com/mprove/photo/20740949 Tue, 14 Apr 2015 19:36:39 GMT https://www.23hq.com/mprove/photo/20740938 <p><a href="https://www.23hq.com/mprove/photo/20740938"><img src="https://www.23hq.com/16171062/20740938_62c21e0cc8855e3018e04e0258b072a1_standard.jpg" width="460" height="306" class="23-standard"/></a></p><p></p><p>Photo by <a href="https://www.23hq.com/mprove/">mprove</a></p> https://www.23hq.com/mprove/photo/20740938 Tue, 14 Apr 2015 19:36:23 GMT https://www.23hq.com/mprove/photo/20740853 <p><a href="https://www.23hq.com/mprove/photo/20740853"><img src="https://www.23hq.com/16171062/20740853_866b1088f8e94dc1cd72a91b00db2143_standard.jpg" width="460" height="345" class="23-standard"/></a></p><p>Grinnell GMR 27, 1980s</p><p>Photo by <a href="https://www.23hq.com/mprove/">mprove</a></p> https://www.23hq.com/mprove/photo/20740853 Tue, 14 Apr 2015 19:28:42 GMT