摘要:
A method for registering and scheduling execution demands comprises steps of: providing an execution demand register having a plurality of execution demand registering flags describing whether an identical number of jobs are registered execution demands or not and priorities thereof; providing a lookup device, and using all possible values of the execution demand registering flags as addresses to respectively store thereinside a job sequence permutation, initial position and registering number corresponding to the job sequence permutation; when a job has to be executed successively, setting the value of the execution demand registering flag corresponding to the job; and in scheduling, using the value of the execution demand registering flag of the updated execution demand register as a lookup address to acquire the initial position and registering number from the lookup device, and finding out the job sequence permutation according to the acquired initial position and registering number to complete scheduling.
摘要:
A cobalt-chromium (Co-Cr) magnetic film electrodeposited on the surface of an aluminum alloy. A process for making an aluminum alloy electrodeposited a cobalt-chromium (Co-Cr) magnetic film comprises the steps of chemically polishing an aluminum alloy substrate, pretreating either with phosphate or with zincate and electrodepositing in a plating bath containing cobalt and chromium ions to prepare the cobalt-chromium thin film on the aluminum alloy. Chromium content in the film can be designed by adjusting the parameters of pretreatment and electroplating. The produced cobalt-chromium film can flexibly adjust the magnetic characteristics (e.g. coercive force (Hc) and ramanence magnetization (Mr)) and is suitable for use in a magnetic recorder. The chemical composition, adhesion, microhardness, magnetic properties of the deposits indicate that the Co-Cr films produced are satisfactory for magnetic recording service.
摘要:
A card reader includes a base having formed thereon two spaced walls defining therebetween a card slot through which a card is movable. Both of the walls have two openings formed thereon to be opposite to each other. A write transducer and a read transducer are respectively suspended by a first biasing member to be located within the openings of one of the walls. A dummy transducer is also suspended by a first biasing member within one of the openings of the other wall. The dummy and read transducers are opposite to each other so as to provide a force and position to the card moved through therebetween. A roller co-axially mounted to and rotatable in unison with an encoder is rotatably supported by a second biasing member within the other opening of the other wall to be opposite to the write transducer to provide a force and position to the card moved through therebetween. The second basing member has two opposite ends each fixed to the wall with an end securing device so as to allow the rotational axis of the roller to be moved relative to the wall in a direction normal to the movement of the card, but not in a direction parallel with the movement of the card. All the first biasing members have two ends secured to the respective wall to make the write, read and dummy transducers movable relative to the wall in a direction normal to the movement of the card, but not in a direction parallel with the movement of the card.
摘要:
A digital programmable load measurement device provides a controllable and variable load unit in a system. The variable load unit is connected to a voltage follower and a current follower to measure and figure out dynamic load voltage and load current of a device under test. Selected loads can be switched in a short period to measure the voltage and current values thereof, sampled for saving, and an I-V curve of the system can be depicted.
摘要:
A measuring system and method of detecting an object distance by transmission media with different wave velocities are described. The measuring system has a computer, a primary detector and a secondary detector. The primary detector is connected to the computer through bus communication and the secondary detector connected to the primary one through two different transmission media. The primary detector is able to receive separately a first signal and a second signal emitted simultaneously from the secondary detector through the transmission media. Moreover, the first signal has light-speed and the second signal has sound-speed. To calculate the distance between the objects which the primary and the secondary detector are attached respectively. The delay time of second signal and the wave velocity of the supersonic media are multiplied.
摘要:
A method for registering and scheduling execution demands comprises steps of: providing an execution demand register having a plurality of execution demand registering flags describing whether an identical number of jobs are registered execution demands or not and priorities thereof; providing a lookup device, and using all possible values of the execution demand registering flags as addresses to respectively store thereinside a job sequence permutation, initial position and registering number corresponding to the job sequence permutation; when a job has to be executed successively, setting the value of the execution demand registering flag corresponding to the job; and in scheduling, using the value of the execution demand registering flag of the updated execution demand register as a lookup address to acquire the initial position and registering number from the lookup device, and finding out the job sequence permutation according to the acquired initial position and registering number to complete scheduling.
摘要:
A digital programmable load measurement device provides a controllable and variable load unit in a system. The variable load unit is connected to a voltage follower and a current follower to measure and figure out dynamic load voltage and load current of a device under test. Selected loads can be switched in a short period to measure the voltage and current values thereof, sampled for saving, and an I-V curve of the system can be depicted.
摘要:
An electromagnetic mark device for any type of magnetism encoder applies the electric current magnetic field as the electromagnetic mark thereof. The electromagnetic mark device comprises an insulated base plate and a thin lead wire. The thin lead wire is fixed to the insulated base plate. It is characterized in that the thin lead wire is laid out on the base plate as a circuit in a way of providing a continuously twisted and turned shape with a constant pitch. Hence, alternate magnetic marks are formed with continuous magnetic poles N·S·N·S once the current passes the lead wire. The electromagnetic mark device can be adapted to a linear ruler or a rotary dial in the magnetism encoder to detect a relative displacement, velocity and angular velocity of a moving object so that the present invention can offer more stable signals and more accurate detection of location with being fabricated more easily.