DIEBOLD INC. $37 (www.diebold.com) is selling its North American electronic-security business, which includes burglar and fire alarms and video systems for accessing and monitoring buildings. The company will receive $350 million for these operations. The cash will help Diebold pay for its plan to buy Wincor Nixdorf AG for $1.9 billion in cash and shares. This firm makes automated teller machines and software that banks and retailers use to process routine transactions. To put these amounts in context, Diebold’s market cap is $2.4 billion. Buy.