某公司上半年产品销售状况是：计算机50 、打印机20 、绘图机10 图形扫描仪5 、打印纸10 、硬盘销售5 ，绘制饼状图-Product sales in the first half of a company are: 50　of the computer, printer, 20 , 10　graphics plotter scanner, 5 , 10　paper, 5　of hard drive sales, to draw a pie chart