Hewlett Packard posted Q1 earnings of 90 cents per share on revenue of $28.15 billion. Analysts were looking for 84 cents on sales of $27.19 billion. Last year, HP earned 82 cents on sales of $28.36 billion in its first quarter. HP's personal systems revenue was up 4% year over year, while financial services revenue was down 9%. Sales dropped 2% at its printing business but the operating margin remained healthy at 16.8%. HP stock was flat at last check after rising 2.5% in the regular session.