Amstrad Plc yesterday gave a first UK showing for the new PC1640 MS-DOS range which it launched in the US last month. Scheduled for delivery sooner than expected, in early August, the range is designed to increase the company’s appeal to the corporate market where it has so far failed to emulate its success in the High Street. General opinion is that the PC1512 launched in September lacks the graphics capabilities that big business requires, so to put that right the new machine contains the Internal Graphics Adaptor, a custom-designed gate array that provides 640 by 350 resolution in Enhanced Graphics Adaptor mode and is compatible with the Hercules standard. The PC1640 range offers 640Kb RAM, against 512Kb in the 1512, and consists of a single 5.25 drive machine at UKP799, double drive machine at UKP899 and a 20Mb version at UKP1,199. Like the PC1512, which is being continued, the PC1640 comes with MS-DOS 3.2, Digital Research’s GEM Graphics Environment Manager, GEM Paint and Locomotive Basic 2, but unlike the 1512, does not include a mouse. Amstrad also announced a new 160 chps printer at UKP169 and a new database called Infomaster at UKP69.95.