In summary: 

The Einstein 256 is the successor of the Einstein TC01 , a smaller micro in size. For use in various countries, or for use with composite video monitors, there is a television adapter that allows use with a home monitor such as television or composite video. 

TATUNG used a custom micro chip, designed by the Telford Team and manufactured by HITACHI. This chip handles memory, I / O decoding and interrupt logic. The 256K DRAMs are used organized as 64K x 4 bits. 
The V9938 video processor works at the incredible 21 MHz!
The disk controller is a Western Digital single chip controller, WD177OPH. The ubiquitous 8251A provides the serial interface, while the Z80 CTC provides the timing functions. 

They tried to make the traditional Einstein image of a large machine disappear on top of which a monitor is placed. 
The Einstein 256 comes in a smaller all-in-one format, keyboard with its 3 "thin line unit conveniently to the right of the keyboard. 
There is no room for a second unit to be installed on the computer itself. Instead, It has an expansion slot where you can connect it.

The processor is the ubiquitous Z80A running at 4MHz. The choice of the Z80 takes advantage of the richness of the programming experience for this particular processor, and also allows the use of CP / M software, this does add a plus. 

As the name implies, Einstein 256 has 256K of RAM. Many microphones that incorporate more than 128K do not really offer the user substantial benefits. In the case of Einstein 256, the memory is divided into a bank of 64K of memory and 192K of video RAM (VRAM).

The massive amount of VRAM means that the machine should be able to paint stunning graphics .... we'll check it out and that's how we get out of doubt. Carrying a V9938 suggests that it will smell more than the account to MSX2 ... The hardware supports two text modes and 7 graphic modes and the text modes allow 40 and 80 column text to be displayed in color. The final resolution of the graphics is 512 x 424 pixels. Four character generators are provided: English (TSO 646); ASCII; German; and Spanish. The appropriate character set can be selected between MOS and BASIC, while the character set displayed when turned on can be set using a DIP switch inside the computer.

When not used by the V9938, the VRAM can be used for other purposes - RAM disk, for example. The architecture ensures that 64K of CPU RAM is available for user software. With DOS loaded, the transitional program area (TPA) "the space for your programs" is 56K. 

Text and graphics can be displayed in 512 colors. In most modes, the color selection is from a palette of 16 colors, the palette being chosen among the 512 colors available on the machine. A line break structure allows programmers to have all 512 colors on the screen at the same time. In graphic mode 7, the screen is organized as 256 x 192/212 pixels. Each pixel can have any of 256 colors.

A total of 32 multicolored sprites are available to the user, each sprite is based on an 8x8 or 16x16 pixel matrix. 
Each row of 8 (or 16) pixels can have its own foreground color - the background color is always transparent. There can be up to 8 sprites per horizontal row - in contrast to the limited capabilities of machine sprites such as the Commodore 64, or the MSX 1. 

For the audio they didn't get too complicated, there's not much to say about the AY-3- 8910, which carry the Oric, Atari ST, Timex 2068, Spectrum from +128 and the Amstrad CPC, to name a few.

The machine's operating system (MOS) COPY and BACKUP utilities reside in the 16k ROM. MOS is based on TATUNG / Xtal MOS, but it has been greatly improved by the design team to fully support the MSX 2 Enhanced Video Display Processor (EVDP) which is the heart of the graphics capabilities of the Einstein 256. Supposedly the ROM could be expanded at 32K. 

DOS (EDOS) is a TATUNG / Xtal DOS 1.31 development used in Einstein and originally developed with the first user in mind. The commands are clear and meaningful with easy to understand error messages instead of the opaque codes that are obtained in CP / M. (No more BDOS errors in A:!) EDOS can run CP / M programs, and is compatible with TATUNG / Xtal DOS.

EBASIC is a much improved version of the TATUNG / Xtal BASIC 4 used in the younger brother of the new machine. It was expanded by the design team to support the new features of Einstein 256, and has a complete set of more than 198 commands and functions, many of which control graphics and sound. 
EBASIC supports multicolored text modes of 80.64.40 and 32 columns. Only graphic modes 2 and 6 are supported, so the maximum resolution available from BASIC (without accessing the EVDP chip directly) is 512x192 pixels. The demonstration programs on the master disk show how easy it is to generate complex programs with relative ease. A welcome addition is the ability to control the BASIC serial port - a feature omitted in the original language.

As a 3 "disk drive installed as standard, the chosen one is the Matsushita EME-150, which provides a capacity of 250K bytes per side, without formatting. The disks can be flipped, giving a total disk capacity of 500K bytes, with A formatted capacity of 188K per side.Apparently with the utilities of Amstrad CPC and ZX Spectrum +3 everything can be done.