| Year | Month | Japan |
| 1958 |
03 |
NEC: Completed its first electronic computer "NEAC-1101" (parametron computer). It contained standard software such as a loader. |
| 1958 |
11 |
Hitachi: Announced "HIPAC-101," a successor to parametron computer "HIPAC MK-I." It contained symbol input routine HISIP 101 as software. |
| 1959 |
03 |
Oki Electric Industry: Completed parametron computer "OPC-1." It adopted two program control systems: a wiring system and a stored program system. |
| 1959 |
05 |
NEC: Completed fully-transistorized computer "NEAC-2203." It contained standard software such as a loader. |
| 1959 |
05 |
Hitachi: Announced transistor computer "HITAC 301." It contained assembly SAP-II, input program SIP and interpreter GITS as software. |
| 1961 |
05 |
Oki Electric Industry: Completed transistor computer "OKITAC5090," which made full use of a magnetic core for the main storage. With its main application being scientific and engineering computing, it provided assembler language, FORTRAN, ALGOL and a magnetic tape monitor. |
| 1961 |
|
Hitachi: Completed "HIPAC 103," which was designed and produced with the primary aim of performing scientific and engineering computing. It contained symbol input routines HISIP 103A and 103B and FORTRAN compiler "HARP103" |
| 1961 |
|
Toshiba: Developed assembler for TOSBAC-3100. |
| 1962 |
|
Toshiba: Developed assembler and loader for TOSBAC-4200. |
| 1963 |
08 |
Mitsubishi Electric: Completed system programs (SIA, SIAS, FORTRAN, COBOL, LOGAND assembler, SORT and MERGE) for MELCOM-1530. |
| 1963 |
|
Fujitsu: Completed software (FORTRAN, assembler, IOCS and SORT) for large-scale, general-purpose computer "FACOM 222." |
| 1964 |
04 |
NEC: Announced the first OS "MOD I" for the NEAC Series 2200, which adopted the one-machine concept. |
| 1964 |
09 |
Hitachi: Completed "HITAC-5020," which contained a monitor system consisting of monitors (system monitor and job monitor), HISAP 5020 (automatic coder with FCP), HARP 5020 (FORTRAN), etc. |
| 1964 |
10 |
Toshiba : Developed magnetic drum-based OS "TOPS-1" for TOSBAC-3400. |
| 1964 |
|
Toshiba : Developed software (assembler, COBOL, FORTRAN and RPG) for TOSBAC-4300. |
| 1965 |
09 |
Hitachi: Announced OS "POS/TOS/TDOS/DOS" for the HITAC 8000, which was developed in technical collaboration with RCA. |
| 1965 |
11 |
Toshiba : Announced magnetic tape-based OS "COS/MT" for TOSBAC-5100, which was capable of continuously performing batch jobs. |
| 1966 |
01 |
Mitsubishi Electric: Completed model 10T, model 10PT and model 30T operating systems for MELCOM-3100. |
| 1966 |
12 |
Fujitsu: Completed monitor "MCP II" for medium-scale, general-purpose computer "FACOM 230-20/30," which realized multi-programming processing. |
| 1966 |
|
Fujitsu: Completed OS "MONITOR II (M-II)" for large-scale, general-purpose computer "FACOM 230-50," which realized the world’s first dynamic relocation. |
| 1967 |
11 |
NTT: Formulated the DIPS development plan. Joint research and development between NTT, NEC, Hitachi and Fujitsu began. |
| 1968 |
07 |
NEC: Announced OS "MOD IV" for medium-to-large machines of the NEAC series, which realized 20 multi-programming tasks including stacked job processing, online real-time processing and remote job processing. |
| 1968 |
08 |
Fujitsu: Announced OS "BOS" for medium-scale batch processing and OS "ROS" for real-time processing, both for medium-scale general-purpose computer "FACOM 230-25/35." |
| 1968 |
10 |
NTT: Completed the DIPS-0 BASIC system, which was realized to add a speech-processing function to HITAC 8400. Began providing system to the laboratory as part of practical application of a shared information processing system. |
| 1968 |
12 |
Fujitsu: Completed OS "MONITOR V (M-V)" for FACOM 230-60, a large general-purpose computer that fully realized multi-task control. |
| 1968 |
|
Mitsubishi Electric: Completed "MARK-III," a disk operating system for MELCOM-3100. |
