An incomplete timeline of early computers in China

Vacuum tube era (1956 ~ 1965)

Machine codename	Date introduced	Modeled after	Technologies	Note
103; DJS-1	Trial: November 1957 ~ July 1958 Small scale production in December 1961	Soviet Union "Small Electronic Computer M-3"	Vacuum tube. Magnetic drum memory.	The same model was also built in Hungary.
104; DJS-2	Trial: May 1958 ~ September 1959	Soviet Union BESM-II	Vacuum tube
DJS-3	1963	Soviet Union "Small Electronic Computer M-3"	Vacuum tube Magnetic core memory	Same as DJS-1 but faster.

Transistor-only era (1965 ~ 1971)

Machine codename	Date introduced	Technologies	Note
109B	1958 ~ 1965	Transistor
121; DJS-21	1965	Transistor
441B II	1963 ~ 1965 Production: 1966	Transistor
X-2	October 1963 ~ 1965 Production: 1966	Transistor
112; DJS-5	1965 Production: 1966	Transistor	The first China-made computer sent abroad.
109C	1964 ~ July 1967	Transistor
108B; DJS-6	1967	Germanium transistor
127; DJS-7	1966 ~ 1967	Ultrasonic delay lines Germanium transistor
DJS-K1	1965 ~ 1967	Transistor	Specialized computer
TQ-1	1965 ~ 1967	Transistor	Specialized computer
320; DJS-8	1971	Silicon transistor

IC era (1971~)

Machine codename	Date introduced	Technologies
111	1971	Silicon transistor; ICs
150; DJS-11	1973?	Silicon transistor; ICs
655; TQ-6	1974	Silicon transistor; ICs
150; DJS-11	1973?	Silicon transistor; ICs

DJS-100/200 era (1973~)

A notable decision made at the beginning of the Transformation Period was to develop ranges of computers of large, medium and small sizes. Task forces for the accomplishment of these objectives were organised in 1973. The members of the task forces came from institutes, universities and factories all over the country.

The range of large computers was the DJS200 mainframe series; the range of medium-sized computers was the DJS100 minicomputer series; while the smaller computers comprised a variety of portable and desktop calculators. They were all planned and developed under the centralised control of the Ministry of Electronics Industry.

The DJS200 Series United Design Group was set up in February 1973 with members from over 15 organisations. Development started a month later. The base for the daily work of the task forces was the North China Institute of Computing Technology in Beijing.

Machine codename	Date introduced	Modeled after	Main design organisation
DJS-130	June 1973 ~ August 1974	Data General NOVA	Tsinghua Univ
DJS-131	June 1973 ~ Dec 1974		Shanghai No. 13 Radio Factory
DJS-120	March 1975 ~ Jul 1975		Tianjin Inst of Radio Tech
DJS-125	1975		Fudan Univ
DJS-140	August 1974 ~ August 1975		Tsinghua Univ
DJS-110	July 1976 ~ October 1977		Nanjing Aeronautics Inst
DJS-112	1978 ~ September 1979		East China Normal Univ
DJS-135	1976 ~ 1979		Tianjin Inst of Radio Tech
DJS-220	1973 ~ January 1979
DJS-210	1974 ~ March 1979
DJS-260	1973 ~ September 1979
DJS-240	1973 ~ January 1980
DJS-101	May 1980		East China Normal Univ
DJS-132	March 1981		Tianjin Inst of Radio Tech
DJS-112A	July 1981		Shaoguan Radio Factory
DJS-142	August 1979 ~ 1982		Tsinghua Univ
DJS-152	1982		Shuzhou Radio Factory
DJS-153	January 1982		Tianjin Inst of Radio Tech

DJS-0xx era (1975?~)

This is the microcomputer era. A lot of famous chips like the Intel 8085, Motorola 6800 and AMD AM2900 series are used. After this era people started using Z80 (just like Russia) and later x86.

Machine codename	Date introduced	Main CPU	Modeled after	Main design organisation	Related resources
77-I	1977
77-II	1977
DJS-050	Starting from Aug 1974, first machine in 1976	Intel MCS-80		Team led by Anhui Radio Factory & Tsinghua Univ.	DJS-050_1 DJS-050_2 DJS-053_1
The DJS-062 series: DJS-062, DJS-062B, DJS-062C, DJS-062D, DJS-062F, DJS-062S	DJS-062: June 1980	Motorola 6800	Motorola MEK6800D2, Motorola M64ADS-1(?) and Hitachi MB6880 Level 2	Shenyang Liaohe Research Facility 沈阳辽河实验研究所 (I don't know where it is. Probably dismantled after 1985.	DJS-061_1 DJS-062D_1