In the question the facing direction of shop is not shown. According to Vastu Shashtra in your computer shop owner most suitable seating place is West South corner and facing North or East. Your main table should be in front of your face with computer or Laptop. Account work should be the same place and other options is North West corner. You should follow the following tips for the best business.
1. Gods picture should be at North East corner.
2. Electric board and metre should be in South East corner.
3. Racks, Cupboards are with Eastern and Western Wall.