Tim-21, Telsa, and Quon finally escape the Machine Moon and head out on a quest to find the ancient robot who may hold the key to the Harvesters. Meanwhile Andy and his ragtag team close in on Tim, but their fragile alliance is shattered by Driller's revelations. A new chapter of the heartfelt sci-fi epic by superstar creators JEFF LEMIRE & DUSTIN NGUYEN begins here. Collects DESCENDER #17-21.

Collects DESCENDER #1-6.

Tim-21, Telsa and Quon finally escape the Machine Moon and head out on a quest to find the ancient robot who may hold the key to the Harvesters. Meanwhile Andy and his rag-tag team close in on Tim, but their fragile alliance is shattered by Driller's revealtions. A new chapter of the heartfelt Sci Fi epic begins here by superstar creators JEFF LEMIRE and DUSTIN NGUYEN Collects issues 17 through 21.

The climactic chapter of DESCENDER is here! All the various factions who have been hunting Tim-21 finally converge around the ocean planet Mata, just as the robots launch their galaxy-wide revolution But nothing can prepare the young android Tim or the readers for what happens next. The DESCENDER saga comes to a startling climax and sets the stage for the next mind-bending adventure. Collects DESCENDER #27-32

The first major DESCENDER event is here. This is what it has all been building to. The Robot Resistance rises up and tightens its iron grip in the universe as the origins of the Harvesters are finally revealed and the galaxy is thrown into all-out war! A new chapter of the sci-fi epic begins here by superstar creators JEFF LEMIRE and DUSTIN NGUYEN. Collects DESCENDER #22-26

"THE HAUNTED GALAXY," Part One Powerhouse creative team JEFF LEMIRE and DUSTIN NGUYEN launch an all-new sequel series to DESCENDER with the launch of ASCENDER! Set ten years after the conclusion of DESCENDER's storyline, magic has taken the place of machinery and the rules are very different indeedÉ Mila, the daughter of Andy and Effie from DESCENDER, spends her days exploring the lonely wilds of the planet Sampson and trying to stay out of the clutches of the evil disciples of the all-powerful vampire witch known only as Mother. But, like her parents, Mila doesnÕt like to play by the rules, and when a certain robot pal of her dad's shows up, nothing will ever be the same! With all the scope and heart of the sci-fi classic DESCENDER, LEMIRE and NGUYEN reunite to take readers on an unforgettable fantasy quest!

UNDERSTANDING OPERATING SYSTEMS provides a basic understanding of operating systems theory, a comparison of the major operating systems in use, and a description of the technical and operational tradeoffs inherent in each. The effective two-part organization covers the theory of operating systems, their historical roots, and their conceptual basis (which does not change substantially), culminating with how these theories are applied in the specifics of five operating systems (which evolve constantly). The authors explain this technical subject in a not-so-technical manner, providing enough detail to illustrate the complexities of stand-alone and networked operating systems. UNDERSTANDING OPERATING SYSTEMS is written in a clear, conversational style with concrete examples and illustrations that readers easily grasp.