If you have ever wanted to design your own computer or wondered what was behind the most successful microcomputer of the 1980s, then this is the book for you. For the first time, the inner working of the Sinclair ZX Spectrum's custom chip and heart of the computer, the Ferranti ULA, is exposed in minute detail.

Best Buy Floor Steam Cleaners Here

: It comes with a 17-piece accessory kit and has a large water tank for longer cleaning sessions.

: It includes self-cleaning functions and a charging base. Best Multipurpose (Floors & More) best buy floor steam cleaners

: This is a flagship cordless wet/dry vacuum that incorporates steam for a deeper clean. : It comes with a 17-piece accessory kit

: It holds a 5/5 star rating at Best Buy and is praised by testers at CNN Underscored for having the most impressive scrubbing performance in its class. best buy floor steam cleaners

: It is lightweight and features multiple steam modes for different floor types. Best High-End / Hybrid

: This model uses dual rotating pads to do the scrubbing work for you.