The utility model refers to medicine, to the division of neurology and neuropsychology, and can find application in neuro-rehabilitation departments of neurological and neurosurgical clinics in conducting classes to restore counting operations in bed patients of a neurologic clinic with acalculia.The device comprises a plastic body (1), a regular octagonal shape, with a width between opposite faces of 70 to 90 mm, and a thickness of 15-25 mm, with four rows of rectangular recesses of three in the front of the body (1) of the device each row, in which 12 rectangular keys (2) are installed, with nine figures from 0 to 9 on them, and "Del" and "Enter" on the two, as well as eight niches along the perimeter of the front part of the body (1) trapezoidal shape, in which eight trapezoidal keys (3) are installed, on which are depicted in symbols representing the basic arithmetic operations: division, addition, subtraction, multiplication, and image arrows denoting different directions: up, down, left, right, and in the center of each face of the body (1) of the device are niches,The proposed device helps to increase the ease and simplicity of working with the keyboard during the sessions on restoring counting operations in bed patients of the neurological clinic with acalculia, provided by the structural elements of the device, which exclude the need to hold the device by hand by fixing it on one of the hands, contribute to the rapid development of the keyboard for account of the usual placement of keys with numbers in accordance with the traditional arrangement of keys on home and cell phones, provide ease of finding the necessary keys to the touch, as well as the convenience of working with the cursor and the possibility of training for patients with impaired movements of one of the hands.Полезная модель относится к медицине, к разделу неврологии и нейропсихологии и может найти применение в отделениях нейрореабилитации неврологических и нейрохирургических клиник при прове