Information processor

An information processor comprising:

• an external memory (11) for storing a plurality of records which are arranged alternately with record positioning codes, each of said records including a plurality of words arranged alternately with word positioning codes;
• a readout record designation means (19,20) for designating a key word based on which records to be read out are selected and for generating signals which indicate the designated key word;
• a main memory (13) coupled to said external memory (11) for continuously reading out the records one by one from said external memory (11) to store the same in consecutive order while effecting address shift;
• a comparison means (16) coupled to said external memory (11) and to said readout record designation means (19,20) for comparing the words in each record with the key word designated by said readout designation means when the record is written into said main memory (13);
• and
• a control means coupled to said comparison means for permitting, in accordance with the output from said comparison means, only the records selected by the key word to be stored into said main memory in consecutive order, said control means including:
• a heading address memory (29) coupled to said main memory (13) for successively renewing and storing the address of said main memory (13) at which a heading character of each record to be stored into said main memory (13) is to be stored;
• and
• means (14,30) coupled to said comparison means (16), to said heading address memory (29) and to said main memory (13), and being responsive to said comparison means (16) for setting the address of said main memory (13) to act as the address stored in said heading address memory (29) when the record is found upon comparison not to coincide with the designated key word and for writing the next record into said main memory (13) from said address stored in said heading address memory (29).