Research in Motion's (RIM) PlayBook tablet computer will go on-sale at more than 20,000 retail locations in the United States and Canada on April 19th, the company announced today.

The PlayBook goes on sale in Canada just days after the launch of the Motorola android powered Xoom tablet and three weeks after the launch of the Apple iPad 2 tablet.

The new device from will sport a seven inch touchscreen (1,024 x 600 pixels), a 1GHz dual-core processor, a gigabyte of RAM, and will run on the QNX operating system.

Additional features of the tablet include: a 5 MP rear camera; a 3 MP front camera; HTML5-capable browser; 802.11 a/b/g/n Wi-Fi; Bluetooth 2.1 +EDR; Adobe Flash 10.1 support; MP3/AAC/WMA audio playback; H.264, MPEG4, and WMV, HDMI video output; Micro USB, Micro HDMI, and DLNA media streaming.

Like the Apple iPad with WiFi that it will compete against, the BlackBerry PlayBook with Wi-Fi will be available in three memory configurations 16GB, 32GB and 64GB for $499, $599 and $699 respectively. The Motorola Xoom with Wifi is only available in 32GB and will sell for $599.

Unlike the iPad and Motorola, the PlayBook will not have 3G models therefore the device will need to tether with a smartphone in order to access a cellular network.

Discuss the RIM PlayBook and other tablet computers in Digital Home Canada's Smartphone and Tablet forum .