Cambridge-based Cyan Holdings is a fabless semiconductor business that specialises in microcontrollers. It was founded in 2002 and the key product is the ultra low power eCOG1 16-bit microcontroller unit. More recently it has developed a 32-bit microcontroller unit. Cyan has its own free design tool called CyanIDE which enables customers to design their own microcontrollers. Cyan's microcontrollers are particular suited to wireless, EPoS and handheld devices. The main selling points are the low power and potential reduction in cost and time. Cyan joined Aim on 7 December 2005, when it raised £4.8m at 22p a share. Founder Dr Paul Johnson stepped aside as chief executive in 2007 and became chief technology officer. Kenn Lamb took over as chief executive in April 2007 having previously worked as a consultant and advised the board how to move the business forward. He has more commercial and sales experience in the technology sector.