4 Commits

Author	SHA1	Message	Date
Jeff Wang	4734fe5a0e	add keyboard, fix display of negative numbers	2019-04-04 02:46:10 -04:00
Jeff Wang	9484dc01fc	fix lcd display, do not create multiple Calculator objects (and threads)	2019-04-04 01:32:15 -04:00
Jeff Wang	fc6d8efc5f	work on Qt GUI, still not working properly	2019-04-04 00:33:42 -04:00
Jeff Wang	8f39958679	start working on gui	2019-04-03 00:07:15 -04:00