Control-C else, typically returning control to the user. Ctrl-C was one of a handful of keyboard sequences chosen by the program designers at Xerox PARC to control text editing, with Ctrl-Z (Undo), Ctrl-X (Cut), Ctrl-V (Paste), and Ctrl-P (Print). The first four letters are all located together at the left end of the bottom row of the standard QWERTY keyboard, and P towards the upper right. The equivalent key combination on Macintosh computers is Command-C. Control-C as an abort command was popularized by TOPS-20 and TOPS-10 and adopted by other systems including Unix. It was also adopted by Digital Equipment operating
HTC Desire Z long press of the power button. After having been shipped originally with Android 2.2.1 (Froyo), OTA updates have now been pushed which upgraded the firmware to Android 2.3.3 (Gingerbread) with the HTC Sense 2.1. Unofficial versions beyond official 2.3.3 are also available, as well as an early port of Sailfish OS. HTC Desire Z has an aluminium shell and QWERTY keyboard with three programmable keys. The smartphone has an 800 × 480 3.7-inch Super LCD capacitive touchscreen. The HTC Desire Z has a 5-megapixel camera with flash on the rear side. The camera is capable of recording 720p video. The