Patent GB-1141682-A (GB)
Title: Teaching apparatus
IPC: G09B7/08
Filed: 1966-03-10
Abstract: 1,141,682. Teaching apparatus. INTERNATIONAL BUSINESS MACHINES CORP. 10 March, 1966 [15 April, 19651, No. 10514/66. Heading G5G. A teaching apparatus, e.g. for translating sentences from English into German comprises an information store 10 for storing problem data and corresponding answer data, an information presentation means 12 for presenting problem data, an input device 14 manually operable for entering a response to each presentation of problem data, and comparing and processing means 16 arranged to receive the response data from the input device and effective to compare the response data with the corresponding answer data, and effective in respect of each incorrect response to select data from the corresponding stored answer data which match correct data of the response and to apply the selected data for presentation by the presentation means. As described an English sentence is presented and the correct or target answer and student's response are recorded in some of the positions (T1-TN, R1-RN) of target and response registers (32, 34) (Fig. 3C, 3E, not shown) of the comparing and processing means respectively, the other positions in those registers being occupied by " end " characters. The machine operates in three phases to compare each string of seven, five, and three letters in the target and response registers. Upon manual depression of a switch which produces a pulse to start the comparing and processing the machine commences phase one. In phase one the letters in the " field ", i.e. the first seven positions of registers (32, 34) are compared in a comparator (36) (Fig. 3D, not shown). Upon a non-match (i.e. non- correspondence) the target answer is shifted one position to the left so that the letters originally in the second to eighth positions of the target register now occupy the first seven positions of the target register (an output register (64) (Fig. 3A, not shown) in which correspondences are recorded shifts with the target register), and the " fields " are again compared. When the target answer has ended, i.e. when an " end " character is in the first position of the target register, the target and output registers are returned to their " home " position, i.e. target answer is returned to the right until a special " end " character is in a position (TH) which precedes the first position (TI) of the target register. The student's response is then shifted one place to the left, and the " fields " are again compared. Upon an " end " character being in the first position (R1) of the response register, the students response is then returned to its "home" position and the machine is advanced to phase two in which the " field " comprises the first five positions in the target and response registers, and the operation is repeated. Finally the machine is advanced to phase three in which the " field " comprises the first three positions in the target and response register. When the target answer and response have ended, and machine is in phase three, the output register is actuated to present to the student on the presentation means all the letters therein. When a match occurs special " used " characters are written into the target answer and student's response and the correct letters are written into the output register. The response, target answer and output register are then shifted seven places to the left, and the " fields " are again compared. The operation continues similarly as described above depending on a match or non-match. The machine includes means whereby the target answer or response in the " fields ", if they include " used " characters are shifted until the "fields" are clear of those characters. Means are also provided for sensing whether or not the target answer or student's response have ended. Alternatively to presenting the correspondences when a student's response is correct the -machine may simply indicate a correct correspondence, e.g. by presenting the word " correct ".