Abstract: A lock device for electronic apparatus includes a lock body and a lock-operating unit. The lock body is configured for correspondingly plugging into a port on an electronic apparatus and has at least one protruded section formed therein for tightly abutting on a protrusion located to one lateral side of a plurality of terminals in the port, so that the lock body is locked to the port. And, the lock body locked to the port can be pulled out of the port only with a specific corresponding lock-operating unit.

Abstract: A lock device for electronic apparatus includes a lock body and a key member. The lock body includes a front end, a rear end, and a bottom side defined between the front and the rear end and having at least one retaining section provided thereon. The lock body is configured for inserting into a slot on an electronic apparatus. When the lock body is inserted into the slot, the bottom side of the lock body is located corresponding to a plurality of terminals in the slot with the retaining section abutted against inner sides of the terminals, so that the lock body is held in the slot to lock the same. The key member is configured for detachably engaging with a lock core structure of the lock body, so that the lock body can be inserted into and extracted from the slot only with the key member.

Abstract: A lock device for electronic apparatus includes a lock body and a key member. The lock body includes a front end, a rear end, and a bottom side defined between the front and the rear end and having at least one retaining section provided thereon. The lock body is configured for inserting into a slot on an electronic apparatus. When the lock body is inserted into the slot, the bottom side of the lock body is located corresponding to a plurality of terminals in the slot with the retaining section abutted against inner sides of the terminals, so that the lock body is held in the slot to lock the same. The key member is configured for detachably engaging with a lock core structure of the lock body, so that the lock body can be inserted into and extracted from the slot only with the key member.

Abstract: A joystick control device having cursor correcting function, in which the conventional adjustable resistor is replaced by a photoelectric element for detecting the movement of the joystick, thereby eliminates the ill effects caused by mechanical attrition of resistor. Additionally, the parameter drifts caused by IC manufacturing processes are corrected using shift correction of joystick; therefore, every individual mass-produced IC shows similar good behavior.

Abstract: Disclosed is a lock for diskette drive suitable for inserting into and locking up a disk slot of said diskette drive to prevent any unauthorized data reading, writing, and copying, mainly including a top and a bottom covers closed together to contain a springy plate and a push plate therebetween. The push plate is disposed below the springy plate and is always pushed backward by a first compression spring. The bottom cover has a back recess into which a lock body is positioned. A spindle extends through the lock body for a plurality of lock pins to hang thereon. Front ends of the lock pins project through holes on the lock body to extend into a sliding groove formed on a movable member when a key card is inserted into a card slot on the lock body. The movable member is positioned between the bottom cover and the lock body and over the lock body and is always pushed by a second compression spring to an outward position and has a projection provided to one side thereof.